diff --git a/frontend/src/components/VariableInput/HighlightLayer.tsx b/frontend/src/components/VariableInput/HighlightLayer.tsx
new file mode 100644
index 00000000..b0cef773
--- /dev/null
+++ b/frontend/src/components/VariableInput/HighlightLayer.tsx
@@ -0,0 +1,89 @@
+import React, { useMemo } from 'react';
+
+interface HighlightLayerProps {
+    value: string;
+    className?: string;
+}
+
+/**
+ * 变量高亮层
+ * 将文本中的变量表达式高亮显示
+ */
+const HighlightLayer: React.FC<HighlightLayerProps> = ({ value, className }) => {
+    // 正则匹配 ${xxx.yyy} 格式的变量
+    const VARIABLE_PATTERN = /\$\{([^}]+)\}/g;
+    
+    // 解析文本，分离普通文本和变量
+    const highlightedContent = useMemo(() => {
+        if (!value) return null;
+        
+        const parts: React.ReactNode[] = [];
+        let lastIndex = 0;
+        let match: RegExpExecArray | null;
+        
+        // 重置正则表达式的 lastIndex
+        VARIABLE_PATTERN.lastIndex = 0;
+        
+        while ((match = VARIABLE_PATTERN.exec(value)) !== null) {
+            const matchStart = match.index;
+            const matchEnd = matchStart + match[0].length;
+            
+            // 添加变量前的普通文本
+            if (matchStart > lastIndex) {
+                parts.push(
+                    <span key={`text-${lastIndex}`}>
+                        {value.substring(lastIndex, matchStart)}
+                    </span>
+                );
+            }
+            
+            // 添加高亮的变量
+            // 关键：不使用 padding/margin/border，只使用背景色和下划线
+            // 不改变字体、字重，保持和输入框完全一致
+            parts.push(
+                <span
+                    key={`var-${matchStart}`}
+                    className="variable-highlight"
+                    style={{
+                        backgroundColor: 'hsl(199 89% 55% / 0.25)',
+                        color: 'hsl(199 89% 25%)',
+                        textDecoration: 'underline',
+                        textDecorationColor: 'hsl(199 89% 48% / 0.6)',
+                        textDecorationThickness: '2px',
+                        textUnderlineOffset: '2px',
+                    }}
+                >
+                    {match[0]}
+                </span>
+            );
+            
+            lastIndex = matchEnd;
+        }
+        
+        // 添加最后一段普通文本
+        if (lastIndex < value.length) {
+            parts.push(
+                <span key={`text-${lastIndex}`}>
+                    {value.substring(lastIndex)}
+                </span>
+            );
+        }
+        
+        return parts.length > 0 ? parts : value;
+    }, [value]);
+    
+    return (
+        <div
+            className={className}
+            style={{
+                pointerEvents: 'none',
+                userSelect: 'none',
+            }}
+        >
+            {highlightedContent}
+        </div>
+    );
+};
+
+export default HighlightLayer;
+
diff --git a/frontend/src/components/VariableInput/deleteHelper.ts b/frontend/src/components/VariableInput/deleteHelper.ts
new file mode 100644
index 00000000..f74987fa
--- /dev/null
+++ b/frontend/src/components/VariableInput/deleteHelper.ts
@@ -0,0 +1,104 @@
+/**
+ * 变量删除辅助函数
+ * 处理变量的整体删除逻辑
+ */
+
+const VARIABLE_PATTERN = /\$\{([^}]+)\}/g;
+
+/**
+ * 查找光标位置所在的变量范围
+ * @param text 文本
+ * @param cursorPos 光标位置
+ * @returns 变量范围 { start, end } 或 null
+ */
+export const findVariableAtCursor = (
+    text: string,
+    cursorPos: number
+): { start: number; end: number } | null => {
+    // 重置正则表达式
+    VARIABLE_PATTERN.lastIndex = 0;
+    
+    let match: RegExpExecArray | null;
+    while ((match = VARIABLE_PATTERN.exec(text)) !== null) {
+        const start = match.index;
+        const end = start + match[0].length;
+        
+        // 检查光标是否在变量内部或紧邻变量边界
+        if (cursorPos > start && cursorPos <= end) {
+            return { start, end };
+        }
+    }
+    
+    return null;
+};
+
+/**
+ * 处理 Backspace 键删除
+ * @param text 文本
+ * @param selectionStart 选区起始位置
+ * @param selectionEnd 选区结束位置
+ * @returns 新文本和新光标位置，或 null（使用默认行为）
+ */
+export const handleBackspaceDelete = (
+    text: string,
+    selectionStart: number,
+    selectionEnd: number
+): { newText: string; newCursorPos: number } | null => {
+    // 如果有选区，使用默认行为
+    if (selectionStart !== selectionEnd) {
+        return null;
+    }
+    
+    // 检查光标前一个字符是否是变量的结束符 '}'
+    if (selectionStart > 0 && text[selectionStart - 1] === '}') {
+        // 查找这个 '}' 对应的变量
+        const variable = findVariableAtCursor(text, selectionStart);
+        if (variable) {
+            // 删除整个变量
+            const newText = text.substring(0, variable.start) + text.substring(variable.end);
+            return {
+                newText,
+                newCursorPos: variable.start
+            };
+        }
+    }
+    
+    // 使用默认行为
+    return null;
+};
+
+/**
+ * 处理 Delete 键删除
+ * @param text 文本
+ * @param selectionStart 选区起始位置
+ * @param selectionEnd 选区结束位置
+ * @returns 新文本和新光标位置，或 null（使用默认行为）
+ */
+export const handleDeleteKey = (
+    text: string,
+    selectionStart: number,
+    selectionEnd: number
+): { newText: string; newCursorPos: number } | null => {
+    // 如果有选区，使用默认行为
+    if (selectionStart !== selectionEnd) {
+        return null;
+    }
+    
+    // 检查光标后一个字符是否是变量的开始符 '$'
+    if (selectionStart < text.length && text[selectionStart] === '$' && text[selectionStart + 1] === '{') {
+        // 查找这个变量
+        const variable = findVariableAtCursor(text, selectionStart + 1);
+        if (variable) {
+            // 删除整个变量
+            const newText = text.substring(0, variable.start) + text.substring(variable.end);
+            return {
+                newText,
+                newCursorPos: variable.start
+            };
+        }
+    }
+    
+    // 使用默认行为
+    return null;
+};
+
diff --git a/frontend/src/components/VariableInput/index.tsx b/frontend/src/components/VariableInput/index.tsx
index 1595f0bb..fe9f0319 100644
--- a/frontend/src/components/VariableInput/index.tsx
+++ b/frontend/src/components/VariableInput/index.tsx
@@ -5,6 +5,8 @@ import { Textarea } from '@/components/ui/textarea';
 import type { VariableInputProps } from './types';
 import { detectTrigger, insertVariable, filterVariables } from './utils';
 import { collectNodeVariables, groupVariablesByNode } from '@/utils/workflow/collectNodeVariables';
+import HighlightLayer from './HighlightLayer';
+import { handleBackspaceDelete, handleDeleteKey } from './deleteHelper';
 
 /**
  * 变量输入组件
@@ -28,6 +30,7 @@ const VariableInput: React.FC<VariableInputProps> = ({
     const inputRef = useRef<HTMLInputElement | HTMLTextAreaElement>(null);
     const containerRef = useRef<HTMLDivElement>(null);
     const dropdownRef = useRef<HTMLDivElement>(null);
+    const highlightRef = useRef<HTMLDivElement>(null);
     
     // 收集可用变量
     const allVariables = useMemo(() => {
@@ -113,6 +116,63 @@ const VariableInput: React.FC<VariableInputProps> = ({
         }
     }, [showSuggestions]);
     
+    // 同步输入框和高亮层的样式
+    useEffect(() => {
+        if (!inputRef.current || !highlightRef.current) return;
+        
+        const inputElement = inputRef.current;
+        const highlightElement = highlightRef.current;
+        
+        const syncStyles = () => {
+            if (!inputElement || !highlightElement) return;
+            
+            const inputStyles = window.getComputedStyle(inputElement);
+            
+            // 复制所有影响文本定位的样式（精确同步）
+            highlightElement.style.paddingTop = inputStyles.paddingTop;
+            highlightElement.style.paddingRight = inputStyles.paddingRight;
+            highlightElement.style.paddingBottom = inputStyles.paddingBottom;
+            highlightElement.style.paddingLeft = inputStyles.paddingLeft;
+            highlightElement.style.fontSize = inputStyles.fontSize;
+            highlightElement.style.fontFamily = inputStyles.fontFamily;
+            highlightElement.style.fontWeight = inputStyles.fontWeight;
+            highlightElement.style.lineHeight = inputStyles.lineHeight;
+            highlightElement.style.letterSpacing = inputStyles.letterSpacing;
+            highlightElement.style.wordSpacing = inputStyles.wordSpacing;
+            highlightElement.style.whiteSpace = variant === 'textarea' ? 'pre-wrap' : 'nowrap';
+            highlightElement.style.wordWrap = 'break-word';
+            highlightElement.style.overflowWrap = inputStyles.overflowWrap;
+        };
+        
+        // 同步滚动位置（仅 textarea）
+        const syncScroll = () => {
+            if (!inputElement || !highlightElement || variant !== 'textarea') return;
+            
+            highlightElement.scrollTop = inputElement.scrollTop;
+            highlightElement.scrollLeft = inputElement.scrollLeft;
+        };
+        
+        // 初始同步（延迟执行，确保 DOM 完全渲染）
+        syncStyles();
+        setTimeout(syncStyles, 0);
+        
+        // 监听窗口大小变化（可能影响字体大小）
+        const resizeObserver = new ResizeObserver(syncStyles);
+        resizeObserver.observe(inputElement);
+        
+        // 监听滚动事件（仅 textarea）
+        if (variant === 'textarea') {
+            inputElement.addEventListener('scroll', syncScroll);
+        }
+        
+        return () => {
+            resizeObserver.disconnect();
+            if (variant === 'textarea') {
+                inputElement.removeEventListener('scroll', syncScroll);
+            }
+        };
+    }, [value, variant]);
+    
     // 监听滚动和窗口大小变化，更新下拉框位置
     useEffect(() => {
         if (!showSuggestions) return;
@@ -149,6 +209,53 @@ const VariableInput: React.FC<VariableInputProps> = ({
     
     // 处理键盘事件
     const handleKeyDown = (e: React.KeyboardEvent<HTMLInputElement | HTMLTextAreaElement>) => {
+        const target = e.target as HTMLInputElement | HTMLTextAreaElement;
+        
+        // 处理变量整体删除（Backspace）
+        if (e.key === 'Backspace' && !showSuggestions) {
+            const result = handleBackspaceDelete(
+                value,
+                target.selectionStart || 0,
+                target.selectionEnd || 0
+            );
+            
+            if (result) {
+                e.preventDefault();
+                onChange(result.newText);
+                
+                // 恢复光标位置
+                setTimeout(() => {
+                    if (inputRef.current) {
+                        inputRef.current.setSelectionRange(result.newCursorPos, result.newCursorPos);
+                    }
+                }, 0);
+                return;
+            }
+        }
+        
+        // 处理变量整体删除（Delete）
+        if (e.key === 'Delete' && !showSuggestions) {
+            const result = handleDeleteKey(
+                value,
+                target.selectionStart || 0,
+                target.selectionEnd || 0
+            );
+            
+            if (result) {
+                e.preventDefault();
+                onChange(result.newText);
+                
+                // 恢复光标位置
+                setTimeout(() => {
+                    if (inputRef.current) {
+                        inputRef.current.setSelectionRange(result.newCursorPos, result.newCursorPos);
+                    }
+                }, 0);
+                return;
+            }
+        }
+        
+        // 建议框快捷键
         if (!showSuggestions) return;
         
         switch (e.key) {
@@ -215,6 +322,17 @@ const VariableInput: React.FC<VariableInputProps> = ({
     
     // 渲染输入框
     const renderInput = () => {
+        const baseStyle = {
+            // 关键：使用 WebKit 专属属性使文字完全透明，但保留光标和选区
+            WebkitTextFillColor: 'transparent',
+            color: 'transparent', // 降级方案
+            caretColor: 'hsl(var(--foreground))',
+            // 保留选区高亮
+            WebkitUserSelect: 'text',
+            userSelect: 'text',
+        } as React.CSSProperties;
+        
+        // 只有有值时才设置透明，这样 placeholder 可以正常显示
         const commonProps = {
             ref: inputRef as any,
             value,
@@ -222,6 +340,8 @@ const VariableInput: React.FC<VariableInputProps> = ({
             onKeyDown: handleKeyDown,
             placeholder,
             disabled,
+            className: 'variable-input',
+            style: value ? baseStyle : { caretColor: 'hsl(var(--foreground))' },
         };
         
         if (variant === 'input') {
@@ -311,8 +431,24 @@ const VariableInput: React.FC<VariableInputProps> = ({
     
     return (
         <div ref={containerRef} className="relative">
-            {/* 输入框 */}
-            {renderInput()}
+            {/* 包装容器：输入框 + 高亮层 */}
+            <div className="relative">
+                {/* 底层：实际的输入框（文字透明，光标可见） */}
+                {renderInput()}
+                
+                {/* 顶层：高亮层（绝对定位，覆盖在输入框上） */}
+                {value && (
+                    <div 
+                        ref={highlightRef}
+                        className="absolute inset-0 pointer-events-none"
+                        style={{
+                            overflow: 'hidden',
+                        }}
+                    >
+                        <HighlightLayer value={value} />
+                    </div>
+                )}
+            </div>
             
             {/* 变量提示弹窗 - 使用 Portal 渲染到 body */}
             {renderDropdown()}
diff --git a/frontend/src/pages/Workflow/Design/components/NodeConfigModal.tsx b/frontend/src/pages/Workflow/Design/components/NodeConfigModal.tsx
index 601fc214..4efa0e7a 100644
--- a/frontend/src/pages/Workflow/Design/components/NodeConfigModal.tsx
+++ b/frontend/src/pages/Workflow/Design/components/NodeConfigModal.tsx
@@ -432,7 +432,7 @@ const NodeConfigModal: React.FC<NodeConfigModalProps> = ({
                         {isConfigurableNode(nodeDefinition) && nodeDefinition.inputMappingSchema && (
                             <AccordionItem value="input" className="border-b">
                                 <AccordionTrigger className="text-base font-semibold flex-row-reverse justify-end gap-2 hover:no-underline">
-                                    输入映射
+                                    输入
                                 </AccordionTrigger>
                                 <AccordionContent className="px-1 space-y-4">
                                     <Form {...inputForm}>
diff --git a/frontend/src/pages/Workflow/Design/nodes/JenkinsBuildNode.tsx b/frontend/src/pages/Workflow/Design/nodes/JenkinsBuildNode.tsx
index 779c1754..922ad405 100644
--- a/frontend/src/pages/Workflow/Design/nodes/JenkinsBuildNode.tsx
+++ b/frontend/src/pages/Workflow/Design/nodes/JenkinsBuildNode.tsx
@@ -61,17 +61,30 @@ export const JenkinsBuildNodeDefinition: ConfigurableNodeDefinition = {
                 title: "节点描述",
                 description: "节点的详细说明",
                 default: "通过Jenkins执行构建任务"
-            },
+            }
+        },
+        required: ["nodeName", "nodeCode", "jenkinsServerId"]
+    },
+    inputMappingSchema: {
+        type: "object",
+        title: "输入",
+        description: "从上游节点接收的数据映射配置",
+        properties: {
             jenkinsServerId: {
                 type: "number",
                 title: "Jenkins服务器",
                 description: "选择要使用的Jenkins服务器",
                 'x-dataSource': DataSourceType.JENKINS_SERVERS
-            }
+            },
+            project: {
+                type: "string",
+                title: "项目",
+                description: "要触发构建的项目",
+                default: ""
+            },
         },
-        required: ["nodeName", "nodeCode", "jenkinsServerId"]
+        required: ["jenkinsServerId"]
     },
-    // ✅ 输出能力定义（只读展示，传递给后端）
     outputs: [
         {
             name: "buildNumber",