看起来是因为ECharts的Bar3D不能应用渐变色吧……我看Demo中都是通过堆叠实现的。 这里是一个通过堆叠的方式模拟的渐变色 Bar3D 例子, [🔗 Examples - Apache ECharts](https://link.segmentfault.com/?enc=cByH5k5RHlVgW3s7k5lKuA%3D%3D.bTPCVWejJS304%2F8JbuXD3%2B3aRwXc6%2BnmifLpd73BOMnm7P4wX5XMDLgGPFO2VbuECUAO3NkXpa30GBIjhXZ1vO%2BoCXShc6Xht6G5oOwp2xt2swkzUex6UtGJdG0gHdTdf%2F1s3nkATfunaw6eYrjsluAphaM3OqZaZxdmjscL54o35zQkKmxa1IDEy3smzhigxIjn%2Fh9bCC%2BCPZQow0f2TK6JdG57VFUgUXDh%2FPMWf6E8tbJeKJu9TYRzmZBp2PkYQxRHIibbPAAQzuRIfB6egtJOeYUykuFiy0aebAsOak5GdflTW97%2BunW7UTby%2B0qk5lUP47xKeZtL%2BK3MtVc8Dg712fNDgg%2F2nxfUhJI4x3zhca%2BTKphr16NNcSG5TV0agZZJvat3ekIcEV6NDl3kQBjn%2Fat1BGWAe9xlQ4lxL%2FYWT4ssM%2B157ercZqEbWeLgdUURPpie2T1QCbUiOSaLxkOdGX0camD4NeczXJfyerxGuLIzVW8F6IwTLb3SlXEX3tiMkr%2BCADa%2FCjZFV6at4ACqQQukicUl01Vl3oYNuMZF%2FccONONHfMULhW2pEEBvYa7mnnnF%2Blen3WCONGDCGWKqPrt3Scwwu%2FUzFsbcOKbHVFMW9br9CT3VCZHM3Gu%2BrCa6phyAKC7HyNE5GnnMmCg51UOL%2FvVTE%2FMXN1EOAw0o2ztidmnTDGn1Q%2BwPdLWmXXc62MriyXlUMN0c6tXOEwXL4Ao%2BOyottX3zw0pKZsJ5ExrqUyw6syP0Hh9DpvIxw79FB8bnVq99qq9LYI59gheydnLkBaL%2F8PBjiuRHaO6lgTG%2B3DOrQu1sQ3%2Bmwdt291ZO3aZjOCX%2FKkE5u29QcvxZTsx1NP5Ao7SblfdT9v%2Bfx2NHj39%2BIwy2MPqUKjOLqRoYEoiZO8AEmMKQVXIMOpJ5%2BfLM6mbO%2FhGcq7%2FZ%2FacI0rGkGrsKvJAbABBZCdQIvukPQGzlu2mmm3bvSrgSLTtCb%2FYkYMJPMHl1a7%2FxXsBbKU6tNo2SOhgpmPQETjf%2Fj89sN00Hlx%2Bzq7urZ%2F4wxecDruQkQOgqOWG2XRDw%2BFGudd%2BNBHH3WDzJS2HbpLZed0v89p1uvB%2BBcr2kxSo7IP3H1Fc98TiPSgX4A3QgXPniiDWr9jmr7qJbNHNNrZVpzt%2B6uxwS9kvZkFOFo3LcsEFhs88y7j9HExk9t5HG6H5wCN7nc1ip92MtoR9AzBu3iiSXTnmEoRqF91dZ7Fqww%2F8R1sUD18p2zgDZ10sT3nhmFafer55q4%2Fgb5uNwkdyUDr5dhMWo%2BIzhwNaIHWPbvTTnuu8iKO0ey9NNrI0Gn8AwWvJlhCGn2fem%2FS%2FOViP34weMjGACctvH%2FJTayGWf4m7duKXnwJK0FOL2p9jWvI1U%2BD6SR1HYi8hUb5ECYJ%2FpHDmJUAyO%2FMZVztG68jA%2F01%2Bx0DYJHW7DOO6r9Z0ACySpW85UEt3PXpcVtRVfM3ITWlDqVcgU%2B8XQT6EdVeYDVWwpTThXz6PwowVN5Bnr2YNyZ6JeMlAOQgacNV65FHYUrqqcUHUvucgULe0THLnYWqmYzKyJKG1f2VLGtORExUiaJiXapa0U9Uy08AJ5aLD6VgLqhccdy4L7XmC6I7fcGMX8oeYxrOF8Oa2EexGEejzUmXUs%2BM4zwSrXlPPWK%2BtuaRySaiXWkVv%2F4eCn7Y0WF%2Bgdk6yYyVYaqXPFjiegeUioZaNRVPPURjLFEEwVy28f6sSbRZGNt%2BurhEnDaggXWERbrLZa3Jq5TL1OO750byaboN%2FR%2B0uUsL2DjPt0pV5E2az0cnUFLgd9O6TeR9sqfZWCP2JteIWL9abz28xuo7e0KCfRathqqGH%2FJ7LfbQpQeWsF5aX9Sn7P2uosIYiEiww7tzFvgIh1aHwmYJZsAuLjkuzeljrJM4C%2BtnTvOzJmbUNIkP%2BwPTO6IqTxdlyQUoq6NtLxWa86s6M0t%2ByGgdHoHzapoFWWgVZZ32AHWGZeqbl3qcv%2FxhpKa8QVcQvr2KoBN%2FabD6q3WXfilyNFAlFGK8GEpRUVWtx6%2BWEcVp%2B5AIZ5g3jhKfU7hZYjQYhPITJnshzxxcM5G%2FntVgCYFLN%2FLPs7FtfTgQOuaIEhZPmX%2FewweOtLTNO3IaWT6c7Aj2kBQDxFeIdqG%2BdLgcAAoD0%2F3i3cneS0jDRI6YWTczwrx9m%2BgAcdHPyV%2BeMnPD5i3tcJe57UY8uomL8hTZZh6XOkAICGkCLmI6yqXFD2fOWiodBdXTUmLhL1wQMgp%2BZh6ZKEE7ckyktvc0U%2BFP7LFMqfaT2ldI%2B4MYxpVuvtuR2FHIXRUvT8qHn85a3RKzObxMRUIKkjlWFWH8MRBcuVLlvUewC5%2FAz3ZJOnqqDBdzX4bB%2F%2BiDJcAKLA9g%2BXQSx3bJ11RjSiZotXvcbD%2BCpsAxoQgDoEMWsmOnUinuv9XqsOdGyFfPDGkvae5IfdLDmyGZzA8aJBau9ebYV%2FElrPsUaZQJifCl7Tsq9zcYEn6ws3fePi3a8SdKcBLSgOPJCATfVO%2BiLNYPLvVtbKJk0kl%2BkmWEjF2FZ%2BXQC2HdSq9NE4CwxwxMqG3Y%2FzyBvvGD%2B3IWHS4dGUccgADWMrK%2Bv%2F5IcmNEW%2Bm%2FsrKOfKBAYIS51CXe2bIU3lsavYCszZ8SCv%2FbiWLmsj2vBTnGvNY46V4vi6%2BRxC5yLin9UpclEHVDbbGJsGP%2FgQc%2Blbkq%2BcdHx9ls5AtyV8vhuzV3NDpePBZdqe3lr1CpTIoS%2B6yMTqXQXfkWnp4SeK8g5b43EIvAE1OBudHCQvad2O46V1RBmLKg9p6loVJzYQzhZiXphDWfZOyVCQxOh8Sn4XzwzF24yX2zIKzhoOYmKZrfvLpw9JAb3a8h1oV4sEzRqFsCCNamQikdwr14Vrc3cUppDaxkVpl8gVwWDzZ%2BekQJ7%2Fs71bVYApkSpe2r1BtoQGHh1g%2Fs4tiaeAXW5XmWK7k6nL5MYqu3aQjHpHGdd%2FKujRFib4vZyPiQSCWyxtpBSXieRNE1e01WlXgsr0Hh2lfkB2deLOVwzio3gFkCtnR1CVoVDCWME5ZszK0kt6FSLQCIl0wIQIzsVVhBNa0jJh6E6CGViYvzSXE7g%2B4t9LMomDOZkUN9%2FUMnroJnbHBv5a%2F%2B4I6Bd1s2%2F%2F1da0pOIB%2BaW5vecDK6tFVOVu%2BgDBtc1l0ENU07SAtIAC4as42voMIomw3QlnBx0xrSFre49E5vMx2zy9yyVLAFYclOLEebK9GNPcN9dhPMer15nW97Y1rIJqdY5H1qtB7nOiGDBK5HmcGx2AguM%2FHXTrGu3zLW6NGUCcq%2BjEw87tK%2Bj93nnjOI2IHyRS5przri6UED0uhPWzoCZfJKPXxkEkQXpuxIlgoXaqQ159qtkOOKrSugxfrhZSdnRWpVMKXCohcJO3FXrRugVU8Zw8jBiFv6fJ8Vnl3ZiFST6cjA3aytDZzh0odockHTLG) 