{"id":1987,"date":"2026-03-26T10:19:33","date_gmt":"2026-03-26T10:19:33","guid":{"rendered":"https:\/\/www.go-diagram.com\/cn\/avoiding-pitfalls-common-mistakes-use-case-diagram-design\/"},"modified":"2026-03-26T10:19:33","modified_gmt":"2026-03-26T10:19:33","slug":"avoiding-pitfalls-common-mistakes-use-case-diagram-design","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/cn\/avoiding-pitfalls-common-mistakes-use-case-diagram-design\/","title":{"rendered":"\u907f\u514d\u9677\u9631\uff1a\u7528\u4f8b\u56fe\u8bbe\u8ba1\u4e2d\u7684\u5e38\u89c1\u9519\u8bef"},"content":{"rendered":"<p>\u7528\u4f8b\u56fe\u662f\u7406\u89e3\u7cfb\u7edf\u884c\u4e3a\u548c\u7528\u6237\u4ea4\u4e92\u7684\u57fa\u7840\u84dd\u56fe\u3002\u5b83\u4eec\u5f25\u5408\u4e86\u62bd\u8c61\u9700\u6c42\u4e0e\u5177\u4f53\u7cfb\u7edf\u529f\u80fd\u4e4b\u95f4\u7684\u9e3f\u6c9f\u3002\u7136\u800c\uff0c\u4ece\u6982\u5ff5\u5230\u56fe\u8868\u7684\u8f6c\u5316\u8fc7\u7a0b\u4e2d\u5f80\u5f80\u9690\u85cf\u7740\u9677\u9631\u3002\u4e0d\u5f53\u7684\u8bbe\u8ba1\u9009\u62e9\u53ef\u80fd\u5bfc\u81f4\u6c9f\u901a\u8bef\u89e3\u3001\u8303\u56f4\u8513\u5ef6\u548c\u5f00\u53d1\u9519\u8bef\u3002\u672c\u6307\u5357\u8be6\u7ec6\u9610\u8ff0\u4e86\u5efa\u6a21\u9636\u6bb5\u7ecf\u5e38\u51fa\u73b0\u7684\u7ed3\u6784\u548c\u8bed\u4e49\u9519\u8bef\u3002<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Hand-drawn whiteboard infographic illustrating 7 common mistakes in Use Case Diagram design: confusing actors with user roles, missing system boundaries, misusing include\/extend relationships, poor verb-noun naming, incorrect granularity, skipping stakeholder validation, and overlooking alternative flows. Features color-coded markers (blue for actors, green for boundaries, red for errors, orange for solutions), visual comparisons of wrong vs. right approaches, and key takeaways emphasizing clarity, user-goal granularity, and regular validation for effective system modeling.\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/03\/use-case-diagram-pitfalls-infographic-whiteboard-style.jpg\"\/><\/figure>\n<\/div>\n<h2>\ud83e\udd14 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&lt;<include>&gt; \u6765\u8868\u793a\u53ef\u9009\u884c\u4e3a\u6216\u5206\u652f\u903b\u8f91\u3002<\/include><\/li>\n<\/ul>\n<h3>\u6269\u5c55\u5173\u7cfb<\/h3>\n<p>\u6269\u5c55\uff08extend\uff09\u5173\u7cfb<extend>&gt; \u5173\u7cfb\u8868\u793a\u53ef\u9009\u884c\u4e3a\u3002\u5b83\u4ec5\u5728\u7279\u5b9a\u6761\u4ef6\u4e0b\u53d1\u751f\u3002\u57fa\u7840\u7528\u4f8b\u5728\u6ca1\u6709\u6269\u5c55\u7528\u4f8b\u7684\u60c5\u51b5\u4e0b\u4e5f\u80fd\u6b63\u5e38\u5de5\u4f5c\u3002\u6269\u5c55\u7528\u4f8b\u4e3a\u57fa\u7840\u7528\u4f8b\u6dfb\u52a0\u529f\u80fd\u3002<\/extend><\/p>\n<ul>\n<li><strong>\u793a\u4f8b\uff1a<\/strong>\u201c\u751f\u6210\u62a5\u544a\u201d\u662f\u57fa\u7840\u7528\u4f8b\uff0c\u201c\u53d1\u9001\u62a5\u544a\u90ae\u4ef6\u201d\u662f\u6269\u5c55\u7528\u4f8b\u3002\u62a5\u544a\u603b\u662f\u4f1a\u751f\u6210\uff0c\u4f46\u53d1\u9001\u90ae\u4ef6\u662f\u53ef\u9009\u7684\u3002<\/li>\n<li><strong>\u65b9\u5411\uff1a<\/strong>\u7bad\u5934\u4ece\u6269\u5c55\u7528\u4f8b\u6307\u5411\u57fa\u7840\u7528\u4f8b\u3002\u8fd9\u5f80\u5f80\u4e0e\u76f4\u89c9\u76f8\u6096\uff0c\u9700\u8981\u7279\u522b\u6ce8\u610f\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udcdd \u9519\u8bef 4\uff1a\u547d\u540d\u89c4\u8303\u4e0d\u5f53<\/h2>\n<p>\u56fe\u8868\u4e0a\u7684\u6807\u7b7e\u662f\u5229\u76ca\u76f8\u5173\u8005\u9605\u8bfb\u6a21\u578b\u7684\u4e3b\u8981\u65b9\u5f0f\u3002\u5982\u679c\u6807\u7b7e\u6a21\u7cca\u4e0d\u6e05\uff0c\u6a21\u578b\u5c31\u65e0\u6cd5\u5b9e\u73b0\u5176\u6c9f\u901a\u76ee\u7684\u3002\u7528\u4f8b\u540d\u79f0\u5e94\u9075\u5faa\u4e25\u683c\u7684\u201c\u52a8\u8bcd + \u540d\u8bcd\u201d\u7ed3\u6784\u3002<\/p>\n<ul>\n<li><strong>\u52a8\u8bcd &#8211; \u540d\u8bcd\u683c\u5f0f\uff1a<\/strong>\u6bcf\u4e2a\u7528\u4f8b\u540d\u79f0\u90fd\u5e94\u4ee5\u52a8\u8bcd\u5f00\u5934\u3002\u201c\u67e5\u770b\u4eea\u8868\u76d8\u201d\u6bd4\u201c\u4eea\u8868\u76d8\u201d\u66f4\u597d\uff0c\u201c\u63d0\u4ea4\u8868\u5355\u201d\u6bd4\u201c\u8868\u5355\u201d\u66f4\u597d\u3002\u8fd9\u4f53\u73b0\u4e86\u52a8\u4f5c\u548c\u610f\u56fe\u3002<\/li>\n<li><strong>\u4e00\u81f4\u6027\uff1a<\/strong>\u5982\u679c\u5728\u4e00\u5904\u4f7f\u7528\u4e86\u201c\u767b\u5f55\u201d\uff0c\u5c31\u4e0d\u8981\u5728\u53e6\u4e00\u5904\u6539\u7528\u201c\u6ce8\u518c\u767b\u5f55\u201d\u3002\u5728\u6574\u4e2a\u56fe\u8868\u4e2d\u7edf\u4e00\u672f\u8bed\u3002<\/li>\n<li><strong>\u8be6\u7ec6\u7a0b\u5ea6\uff1a<\/strong>\u907f\u514d\u4f7f\u7528\u8fc7\u4e8e\u6280\u672f\u5316\u7684\u540d\u79f0\u3002\u201c\u5c06\u6570\u636e\u4fdd\u5b58\u5230\u6570\u636e\u5e93\u201d\u662f\u7cfb\u7edf\u5b9e\u73b0\u7ec6\u8282\uff0c\u800c\u975e\u7528\u6237\u76ee\u6807\u3002\u201c\u4fdd\u5b58\u6587\u6863\u201d\u624d\u662f\u6b63\u786e\u7684\u7528\u4f8b\u540d\u79f0\u3002<\/li>\n<li><strong>\u552f\u4e00\u6027\uff1a<\/strong>\u786e\u4fdd\u6ca1\u6709\u4e24\u4e2a\u7528\u4f8b\u5177\u6709\u76f8\u540c\u7684\u540d\u79f0\u3002\u5982\u679c\u6709\uff0c\u5219\u5b83\u4eec\u4ee3\u8868\u76f8\u540c\u7684\u529f\u80fd\uff0c\u5e94\u5f53\u5408\u5e76\u3002<\/li>\n<\/ul>\n<h2>\ud83e\udde9 \u9519\u8bef 5\uff1a\u7c92\u5ea6\u4e0d\u5f53<\/h2>\n<p>\u7c92\u5ea6\u6307\u7684\u662f\u7528\u4f8b\u7684\u8be6\u7ec6\u7a0b\u5ea6\u3002\u56fe\u8868\u5e38\u56e0\u8fc7\u4e8e\u5b8f\u89c2\u6216\u8fc7\u4e8e\u5fae\u89c2\u800c\u51fa\u73b0\u95ee\u9898\u3002<\/p>\n<h3>\u8fc7\u4e8e\u5b8f\u89c2\uff08\u5b8f\u89c2\u7ea7\uff09<\/h3>\n<p>\u5f53\u7528\u4f8b\u8fc7\u4e8e\u5bbd\u6cdb\u65f6\uff0c\u5b83\u4eec\u5c31\u5931\u53bb\u4e86\u610f\u4e49\u3002\u540d\u4e3a\u201c\u7ba1\u7406\u7cfb\u7edf\u201d\u7684\u7528\u4f8b\u6beb\u65e0\u7528\u5904\u3002\u5b83\u6db5\u76d6\u4e86\u4ece\u767b\u5f55\u5230\u5220\u9664\u7528\u6237\u7684\u6240\u6709\u64cd\u4f5c\u3002\u8fd9\u4f7f\u5f97\u65e0\u6cd5\u4f30\u7b97\u5de5\u4f5c\u91cf\u6216\u7406\u89e3\u5177\u4f53\u9700\u6c42\u3002<\/p>\n<h3>\u8fc7\u4e8e\u5fae\u89c2\uff08\u5fae\u89c2\u7ea7\uff09<\/h3>\n<p>\u5f53\u7528\u4f8b\u8fc7\u4e8e\u5177\u4f53\u65f6\uff0c\u56fe\u8868\u5c31\u4f1a\u53d8\u6210\u70b9\u51fb\u64cd\u4f5c\u7684\u6d41\u7a0b\u56fe\u3002\u540d\u4e3a\u201c\u70b9\u51fb\u6309\u94ae A\u201d\u7684\u7528\u4f8b\u5c5e\u4e8e\u7528\u6237\u754c\u9762\u4ea4\u4e92\uff0c\u800c\u975e\u529f\u80fd\u9700\u6c42\u3002\u8fd9\u4f1a clutter \u56fe\u8868\u5e76\u63a9\u76d6\u771f\u6b63\u7684\u4e1a\u52a1\u4ef7\u503c\u3002<\/p>\n<p>\u6b63\u786e\u7684\u7c92\u5ea6\u5e94\u4ee5\u7528\u6237\u76ee\u6807\u4e3a\u51c6\u3002\u4ec0\u4e48\u662f\u6700\u5c0f\u7684\u3001\u80fd\u4e3a\u53c2\u4e0e\u8005\u63d0\u4f9b\u4ef7\u503c\u7684\u529f\u80fd\u5355\u5143\uff1f\u8fd9\u901a\u5e38\u88ab\u79f0\u4e3a\u201c\u7528\u6237\u76ee\u6807\u201d\u7ea7\u522b\u3002<\/p>\n<h2>\ud83d\udcca \u5e38\u89c1\u9519\u8bef\u5bf9\u6bd4\u8868<\/h2>\n<table>\n<thead>\n<tr>\n<th><strong>\u9677\u9631<\/strong><\/th>\n<th><strong>\u9519\u8bef\u65b9\u6cd5<\/strong><\/th>\n<th><strong>\u6b63\u786e\u65b9\u6cd5<\/strong><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u53c2\u4e0e\u8005\u5b9a\u4e49<\/td>\n<td>\u6807\u6ce8\u5177\u4f53\u4eba\u5458\uff08\u4f8b\u5982\uff1a\u201c\u7231\u4e3d\u4e1d\u201d\uff09<\/td>\n<td>\u6807\u6ce8\u89d2\u8272\uff08\u4f8b\u5982\uff1a\u201c\u6ce8\u518c\u7528\u6237\u201d\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u7cfb\u7edf\u8fb9\u754c<\/td>\n<td>\u7ebf\u6761\u91cd\u53e0\u6216\u7f3a\u5c11\u65b9\u6846<\/td>\n<td>\u6e05\u6670\u3001\u72ec\u7acb\u7684\u65b9\u6846\u5305\u542b\u6240\u6709\u529f\u80fd<\/td>\n<\/tr>\n<tr>\n<td>\u5173\u7cfb<\/td>\n<td>\u5bf9\u53ef\u9009\u6b65\u9aa4\u4f7f\u7528\u201c\u5305\u542b\u201d<\/td>\n<td>\u5bf9\u53ef\u9009\u6b65\u9aa4\u4f7f\u7528\u201c\u6269\u5c55\u201d\uff0c\u5bf9\u5fc5\u9009\u6b65\u9aa4\u4f7f\u7528\u201c\u5305\u542b\u201d<\/td>\n<\/tr>\n<tr>\n<td>\u547d\u540d<\/td>\n<td>\u4ec5\u4f7f\u7528\u540d\u8bcd\u77ed\u8bed\uff08\u4f8b\u5982\uff1a\u201c\u62a5\u544a\u201d\uff09<\/td>\n<td>\u52a8\u5bbe\u77ed\u8bed\uff08\u4f8b\u5982\uff1a\u201c\u751f\u6210\u62a5\u544a\u201d\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u7c92\u5ea6<\/td>\n<td>UI \u70b9\u51fb\uff08\u4f8b\u5982\uff1a\u201c\u70b9\u51fb\u4fdd\u5b58\u201d\uff09<\/td>\n<td>\u7528\u6237\u76ee\u6807\uff08\u4f8b\u5982\uff1a\u201c\u4fdd\u5b58\u6587\u6863\u201d\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u5916\u90e8\u7cfb\u7edf<\/td>\n<td>\u5ffd\u7565\u7b2c\u4e09\u65b9\u670d\u52a1<\/td>\n<td>\u5c06 API\/\u670d\u52a1\u89c6\u4e3a\u53c2\u4e0e\u8005<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\ud83d\udd0d \u9519\u8bef 6\uff1a\u5ffd\u7565\u201c\u4e3a\u4ec0\u4e48\u201d\uff08\u9a8c\u8bc1\uff09<\/h2>\n<p>\u4e00\u5f20\u5728\u6280\u672f\u4e0a\u6b63\u786e\u4f46\u4e0e\u4e1a\u52a1\u65e0\u5173\u7684\u56fe\u8868\u662f\u5931\u8d25\u7684\u3002\u8bbe\u8ba1\u4eba\u5458\u5f80\u5f80\u5173\u6ce8\u8bed\u6cd5\uff08\u7ebf\u6761\u3001\u65b9\u6846\u3001\u6807\u7b7e\uff09\uff0c\u800c\u5ffd\u89c6\u4e0e\u5229\u76ca\u76f8\u5173\u8005\u7684\u9a8c\u8bc1\u3002<\/p>\n<p>\u9a8c\u8bc1\u786e\u4fdd\u56fe\u8868\u53cd\u6620\u73b0\u5b9e\u3002\u5982\u679c\u6ca1\u6709\u9a8c\u8bc1\uff0c\u56e2\u961f\u53ef\u80fd\u4f1a\u6784\u5efa\u65e0\u4eba\u4f7f\u7528\u7684\u529f\u80fd\u3002\u8be5\u8fc7\u7a0b\u6d89\u53ca\u4e0e\u5ba2\u6237\u6216\u4ea7\u54c1\u8d1f\u8d23\u4eba\u4e00\u8d77 walkthrough \u56fe\u8868\u3002<\/p>\n<ul>\n<li><strong>\u8d70\u67e5\uff1a<\/strong>\u5ba1\u67e5\u6bcf\u4e2a\u7528\u4f8b\uff0c\u786e\u8ba4\u5176\u7b26\u5408\u4e1a\u52a1\u9700\u6c42\u3002<\/li>\n<li><strong>\u7f3a\u5931\u4ea4\u4e92\uff1a<\/strong>\u8be2\u95ee\u5229\u76ca\u76f8\u5173\u8005\uff0c\u56fe\u8868\u4e2d\u662f\u5426\u9057\u6f0f\u4e86\u4efb\u4f55\u5173\u952e\u4efb\u52a1\u3002<\/li>\n<li><strong>\u590d\u6742\u5ea6\u68c0\u67e5\uff1a<\/strong>\u786e\u4fdd\u56fe\u8868\u4e0d\u4f1a\u8fc7\u4e8e\u590d\u6742\uff0c\u4ee5\u81f3\u4e8e\u65b0\u5f00\u53d1\u4eba\u5458\u65e0\u6cd5\u5728 15 \u5206\u949f\u5185\u7406\u89e3\u5b83\u3002<\/li>\n<li><strong>\u53cd\u9988\u5faa\u73af\uff1a<\/strong>\u5c06\u56fe\u8868\u89c6\u4e3a\u4e00\u4efd\u52a8\u6001\u6587\u6863\u3002\u5f53\u9700\u6c42\u53d1\u751f\u53d8\u5316\u65f6\u66f4\u65b0\u5b83\uff0c\u800c\u4e0d\u662f\u5c06\u5176\u89c6\u4e3a\u9759\u6001\u4ea7\u7269\u3002<\/li>\n<\/ul>\n<h2>\ud83d\udee0\ufe0f \u7ed3\u6784\u5b8c\u6574\u6027\u4e0e\u7ef4\u62a4<\/h2>\n<p>\u968f\u7740\u65f6\u95f4\u7684\u63a8\u79fb\u4fdd\u6301\u56fe\u8868\u7684\u5b8c\u6574\u6027\u81f3\u5173\u91cd\u8981\u3002\u968f\u7740\u7cfb\u7edf\u7684\u6f14\u8fdb\uff0c\u56fe\u8868\u4e5f\u5fc5\u987b\u968f\u4e4b\u6f14\u8fdb\u3002\u8fc7\u65f6\u7684\u56fe\u8868\u6bd4\u6ca1\u6709\u56fe\u8868\u66f4\u7cdf\u7cd5\uff0c\u56e0\u4e3a\u5b83\u4f1a\u5236\u9020\u865a\u5047\u7684\u4fe1\u5fc3\u3002<\/p>\n<h3>\u7b26\u53f7\u7684\u4e00\u81f4\u6027<\/h3>\n<p>\u786e\u4fdd\u6574\u4e2a\u9879\u76ee\u4e2d\u7b26\u53f7\u4fdd\u6301\u4e00\u81f4\u3002\u5982\u679c\u60a8\u4e3a\u5916\u90e8\u7cfb\u7edf\u4f7f\u7528\u4e86\u7279\u5b9a\u7b26\u53f7\uff0c\u5207\u52ff\u5728\u9879\u76ee\u4e2d\u9014\u66f4\u6362\u4e3a\u5176\u4ed6\u7b26\u53f7\u3002\u4e00\u81f4\u6027\u53ef\u4ee5\u964d\u4f4e\u4efb\u4f55\u9605\u8bfb\u8be5\u6a21\u578b\u7684\u4eba\u5458\u7684\u8ba4\u77e5\u8d1f\u8377\u3002<\/p>\n<h3>\u4e0e\u9700\u6c42\u5173\u8054<\/h3>\n<p>\u867d\u7136\u5c06\u7528\u4f8b\u4e0e\u7279\u5b9a\u9700\u6c42 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