因为你的 `el-dropdown-item` 里面嵌套了 `el-dropdown-item`,所以会触发两次,一次是父级的,一次是子级的。所以把外面的 `el-dropdown-item` 去掉自己写一个 `flex` 布局的 `div` 元素就好了。 [🔗 这里是问题复现Demo](https://link.segmentfault.com/?enc=mvtaFMVy7bVlmOsXPWJd4Q%3D%3D.zMDURih4VDhsh0xbQiGAzanYImY0HLB5v7heH%2FjHyeZiiBqxkDFdlvhJFeSL0S28U9CzNk1uqrvlvVcdiUUs7q3YW8pS%2FBoKEGxODZlbL4P5ht0wFmUVnRAyd994MwcTDgj1oEfaKbLtzW2qfDIIxNYW8yu4RGeip8KktrPw2DbCNPxZ8y9Zk%2BF3rx1Jk8JoJ%2FkcBXyw0vE1tOV13qI7ytey3ItraVnITP0nFJV1vVvtia71kNjTEsBXoI8iU%2FK0E6%2BqGvG%2BkAiAnR9o8SVrPU4N8Hji2pz81fu7KVuGR7F4KeaKxDG9WpVRjFhh45VX1jqAnQ%2FsZmUqOTziWAWEHoAmXMKKvl0SS39C3zJ397PO858Haz%2ByKRE1t%2FjTKklQj3VzVj3K%2FDCp5Gm9VlleWTWNB4QCwKoWb4NoIYDWkQz5ah8Kk4BMtfPnEg5tuozADsdEQAaefcoDw0R2GIc3%2BfyPtCwJQJ7wlRIOXsDPownjYpA77v2jgjeM2zszeW68jmyG7YoAqZjJ3fu3Qkyu6T8TJl4K2A6twT4Z2IAVN2qfaNPeb4RaL9WUWIcc%2BIDEsNrDJEbRr9YKvtZyKPgLrvaPb1NAGnu%2BoETBuC9cV167MNXCWDUcXw%2BXGTBWxP98ermtlsfMb0snEorctlmYrhg1yMQe3UqiO7tw7PvBEjp7Gu6UMxxvseedGMog2Sd6D7yA3dpXsOIM7n2SMaZl%2FaWzMHdcY9tLUwqHL1Co7GWB96c1ZtOIn4KABo7Qisw7GiJTpKtVV%2FRLFXWHTy1YjgqupysXJEs8HijJ93TdHaOphv7TcKLMxX79d13XBnyMA51%2BNfPi5oXRSF7wrg7ny65NjjTyqXJBvcTVrkp4fSkWg1VvnVH1GEhgHcVbOZ58RxM63c%2FULWAbRXH8YMrM1hMHp%2FL%2FiXTSFEidFcsuJNCi8iUprDHYnmLFUnfwQQGXxtPm6uKDwEEHecQBbt0XlsNBNh2aQ2hKpvNopAZKRj5gnTn1It7eYrwjjs4H8ENa9FIHrk%2BfFhzV2rgBvnN3zw2B3DC%2FfT%2BZwUnLTqC12sSRYoDgItmOk7zVvRh307wreHKKUNT2W7zhNbIj05pAU58egzy2Ra7Hvw0peK%2BbFOCxmQ55t0L7giPAbRinBpF%2FnYgPajzn4Qa9YPbzmK9ClmO2VZXSK%2BK%2BBHxG%2Bx58T3dea8cCISKnA%2BeJ6UYV0ZiT%2FblZRBBqz9dnNteYfEDmWnGbWmeqBLk2rDkHZDL5Yr4kD6ReWva8r9zuahkuI5R7oJls2Yxoz%2FVQAZeLPnrJ%2BoZdH7%2BgiLekKho0iomG%2Bh%2B%2Bm7dDYGmOvyh61%2BtahVgSI5D%2By3GYHLEkWlvbPcLNKwKOgpLI0yJWPvN6APWgauR83kZ809HpleYuI9I06KmrSzIOFvP8fWvwA9NeFp%2BDEckI223YBZ0T4HW%2Bsk9ubAauwnaGYbHEIjJDdbVGFm9NxQxrV7fcUBFQMYlD%2Bycb9mokfl0Mk66vn1SCTyCOT24Hlfg4iZ0FTbwbDdJeMSXqjg2dKMRBC6v1y3%2FC8PvJtBku5fRmvJqaI4c%2FCPKSH8syRRinnXH8AhRISLThDEXuDUuMru5uinFDi13IpqaSqDlmaw%2BA9Vm%2F0NuTO42g0UPDItzvqADVnxis1qS59LRZMqtPGETHgc9ikXwcAtHeP0mTrbBdRynZK0aofqCGRDs5RugjamjMMLZepmsja6JFu6eXNQZicnuVPA%2BwsS1kZkUxKXlr07qZdNfWVAOtrhfLG%2Fzz%2FsjbZ3nfj9AUWYxOZ4xg6kHvWAxudifYsYG%2FYc0%2BO2d8t3NbWrRVBlwYxdra8MPsjB7UyPS%2FpxRB1qgfT6doHcEo5VfIu8cLAnfV2EqWpdyqHKiNGTgN4qdwUSYV%2BlSPYCvqvx2chflQBBxYkZxYn%2F3ZE0PqC8JaDSQDpLHcdHcgxB4Yoa%2FqvrQklqBFrOOxrYTJyC7QMmDipar%2FV%2BNlZD9bQjwVNDMSXmrFQ2qdXTGUGeBYayf2YxasXw32HYtLFI3moEcSNoWCUM66JOC%2Bd5FOZCl2jJokkgab%2FOkI%2BRcq38KG9vBlaxuAHWL1VwWE6EuqsB3WV8fts6EVO7RK6SuN7nTXpLLhradnDzFUmhO4eIkr5Ov5Gz4U1bHjw2bzMZGIiIBpvAoir3INpRIqNtUu%2BaT5xYa3ykWwUYAd8ccUHi9kBc%2B%2FOAe%2FOnj5VnAsRIe%2F%2BlCFca7A6sRcRx7ZnQuy9%2FU3hpsSmhfTayAyjOyvRRiq37zEaPbIZv28VXBXIgfnGdAqCztu5VdGQhoZ3cbVhtH6BvKGev4kd63eCVpdnyZBjQKUE3%2F5WjjVQRLauS6PYogZZ5QjRnjrcuhpeWReZa4tWzw%2B9Ug8vgmXiO1RgUjakv88Sq9lUlJ2b5VsXVZ24RN72MwcWxmudbbgTW7a4u42%2FoO4p3de7E7f%2F%2Fz1CEm5SCK3rlc9%2BdSBGsq7pywlPLDRi60EbrpieKN5s5pbZzWo%2FY4o29tH8ITO4av6SauV%2FVzDuWJgYaoT%2F9hu6HlvD%2FfZjTGnUadFM2B7P5q5mLJZch4JfPhc0modhjQPjAIdtwDlGxfb%2FsHLU4rd9llLLn94R5zMi6IH20WMkYZ%2FtHx4FHiIK00Kt8EllLX1a4UitMb%2BebQ%2BYGUKgKvDj4c2QAaf%2FhFqFBE7dhSbEYgy9xTLxcQiK4u9xf67aKLmdPGRCHTrNrklTDvKW%2BI5xQOplFi2f5XOfWyzFerChMCP0BvoghETXrDuR2cGx4L8Je0SdxJL%2FPpJGNGbCCwbN4Q5tbcv6WeJBmZtbwMKmn3FzffxGLWeke12aP7J53FNflEZ5HT5lixHqeuDGK%2B92Zxc3whRB%2FNyphYsAU1eIsxlhSZoW5qDzsMXvhrQ4mRQFANVN6%2B2BMwXam1TwO2lRuIPdYCgU5%2Frf7uwUYGTmqEkt0B4fF%2B76s7t9iD2Zb%2BdC0oQGtjtMwL7FIYU%2Bzyh0kUbKHnLbdVBuJOHNsf%2FcAMsBmJZEOk1H7BqOw%3D%3D)