卸载重装都试过，还是不行。
最根本的原因，是需要根据node版本安装不同的node-sass.
参照：https://github.com/sass/node-sass
| NodeJS | Minimum node-sass version | Node Module |
|---|---|---|
| Node 13 | 4.13+ | 79 |
| Node 12 | 4.12+ | 72 |
| Node 11 | 4.10+ | 67 |
| Node 10 | 4.9+ | 64 |
| Node 8 | 4.5.3+ | 57 |
查看node版本，重新安装后，问题解决。
PS E:DEVNetBeans enren-fast-vue> node -v v12.13.1 PS E:DEVNetBeans enren-fast-vue> cnpm install node-sass@4.12.0 √ Installed 1 packages √ Linked 168 latest versions [1/1] scripts.install node-sass@4.12.0 run "node scripts/install.js", root: "E:\DEV\NetBeans\renren-fast-vue\node_modules\_node-sass@4.12.0@node-sass" Downloading binary from https://cdn.npm.taobao.org/dist/node-sass/v4.12.0/win32-x64-72_binding.node Download complete nding.node Caching binary to C:Usersflashmx.npminstall_tarball ode-sass4.12.0win32-x64-72_binding.node [1/1] scripts.install node-sass@4.12.0 finished in 2s [1/1] scripts.postinstall node-sass@4.12.0 run "node scripts/build.js", root: "E:\DEV\NetBeans\renren-fast-vue\node_modules\_node-sass@4.12.0@node-sass" Binary found at E:DEVNetBeans enren-fast-vue ode_modules\_node-sass@4.12.0@node-sassvendorwin32-x64-72inding.node Testing binary Binary is fine [1/1] scripts.postinstall node-sass@4.12.0 finished in 448ms √ Run 1 scripts Recently updated (since 2020-02-19): 2 packages (detail see file E:DEVNetBeans enren-fast-vue ode_modules.recently_updates.txt) Today: → node-sass@4.12.0 › meow@3.7.0 › normalize-package-data@2.5.0 › hosted-git-info@^2.1.4(2.8.6) (01:16:32) √ All packages installed (178 packages installed from npm registry, used 38s(network 30s), speed 23.62kB/s, json 169(319.54kB), tarball 380.76kB)