diff --git a/lua/lsp/lua.lua b/lua/lsp/lua.lua
index c7ebcf2..3537238 100644
--- a/lua/lsp/lua.lua
+++ b/lua/lsp/lua.lua
@@ -12,7 +12,7 @@ return {
       },
       diagnostics = {
         -- Get the language server to recognize the `vim` global
-        globals = {'vim'},
+        globals = {'vim', 'G' },
       },
       workspace = {
         -- Make the server aware of Neovim runtime files
diff --git a/lua/plugs.lua b/lua/plugs.lua
index ef44dc5..ef14704 100644
--- a/lua/plugs.lua
+++ b/lua/plugs.lua
@@ -6,8 +6,8 @@ return {
   'lilydjwg/colorizer',            -- 颜色识别
 
 
-  require('plugs.coc'),  	     -- coc
-  -- require('plugs.nvim-lspconfig'),       -- 
+  -- require('plugs.coc'),  	     -- coc
+  require('plugs.nvim-lspconfig'),       -- 
   require('plugs.lualine'),    -- lualine
   require('plugs.nvimtree'),   -- nvimtree
   require('plugs.treesitter'), -- treesitter
diff --git a/lua/plugs/nvim-lspconfig.lua b/lua/plugs/nvim-lspconfig.lua
index f321180..01f6e84 100644
--- a/lua/plugs/nvim-lspconfig.lua
+++ b/lua/plugs/nvim-lspconfig.lua
@@ -2,30 +2,13 @@ return {
   {
     "neovim/nvim-lspconfig",
     config = function ()
+      require'lspconfig'.lua_ls.setup(require('lsp.lua'))
     end
   },
   {
-    'williamboman/nvim-lsp-installer',
-    config = function ()
-      local lsp_installer = require "nvim-lsp-installer"
-
-      -- 安装列表
-      -- https://github.com/williamboman/nvim-lsp-installer#available-lsps
-      -- { key: 语言 value: 配置文件 }
-      local servers = {
-        sumneko_lua = require "lsp.lua", -- /lua/lsp/lua.lua
-      }
-
-      -- 自动安装 LanguageServers
-      for name, _ in pairs(servers) do
-        local server_is_found, server = lsp_installer.get_server(name)
-        if server_is_found then
-          if not server:is_installed() then
-            print("Installing " .. name)
-            server:install()
-          end
-        end
-      end
+    "williamboman/mason.nvim",
+    config = function()
+      require("mason").setup({})
     end
   },
   {
@@ -33,22 +16,115 @@ return {
     'hrsh7th/cmp-buffer',   -- { name = 'buffer' },
     'hrsh7th/cmp-path',     -- { name = 'path' }
     'hrsh7th/cmp-cmdline',  -- { name = 'cmdline' }
-    'onsails/lspkind-nvim',
+    'hrsh7th/cmp-vsnip',
+    {
+      'onsails/lspkind-nvim',
+      config = function()
+        require('lspkind').init({
+            mode = 'symbol_text',
+            preset = 'codicons',
+            symbol_map = {
+              Text = "󰉿",
+              Method = "󰆧",
+              Function = "󰊕",
+              Constructor = "",
+              Field = "󰜢",
+              Variable = "󰀫",
+              Class = "󰠱",
+              Interface = "",
+              Module = "",
+              Property = "󰜢",
+              Unit = "󰑭",
+              Value = "󰎠",
+              Enum = "",
+              Keyword = "󰌋",
+              Snippet = "",
+              Color = "󰏘",
+              File = "󰈙",
+              Reference = "󰈇",
+              Folder = "󰉋",
+              EnumMember = "",
+              Constant = "󰏿",
+              Struct = "󰙅",
+              Event = "",
+              Operator = "󰆕",
+              TypeParameter = "",
+            },
+        })
+      end
+    },
     {
       "hrsh7th/nvim-cmp",
-      config = function() 
+      config = function()
+        local has_words_before = function()
+          unpack = unpack or table.unpack
+          local line, col = unpack(G.api.nvim_win_get_cursor(0))
+          return col ~= 0 and G.api.nvim_buf_get_lines(0, line - 1, line, true)[1]:sub(col, col):match('%s') == nil
+        end
         local cmp     = require('cmp')
-        -- local lspkind = require('lspkind')
+        local lspkind = require('lspkind')
         cmp.setup {
           sources = cmp.config.sources({
             { name = 'nvim_lsp' },
             { name = 'buffer' },
             { name = 'path' },
             { name = 'cmdline' },
+            {name = 'vnsip'},
           }),
+          mapping = cmp.mapping.preset.insert({
+            ['<CR>'] = cmp.mapping.confirm({ select = true }), -- Accept currently selected item. Set `select` to `false` to only confirm explicitly selected items.
+            ['<Tab>'] = function(fallback)
+              if not cmp.select_next_item() then
+                if vim.bo.buftype ~= 'prompt' and has_words_before() then
+                  cmp.complete()
+                else
+                  fallback()
+                end
+              end
+            end,
 
+            ['<S-Tab>'] = function(fallback)
+              if not cmp.select_prev_item() then
+                if vim.bo.buftype ~= 'prompt' and has_words_before() then
+                  cmp.complete()
+                else
+                  fallback()
+                end
+              end
+            end,
+
+          }),
+          window = {
+            completion = {
+              winhighlight = "Normal:Pmenu,FloatBorder:Pmenu,Search:None",
+              col_offset   = -3,
+              side_padding = 0,
+            },
+          },
+          fomatting = {
+            format = lspkind.cmp_format({
+              mode = 'symbol', -- show only symbol annotations
+              maxwidth = 50, -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
+              ellipsis_char = '...', -- when popup menu exceed maxwidth, the truncated part would show ellipsis_char instead (must define maxwidth first)
+              before = function (_, vim_item)
+                return vim_item
+              end
+            })
+          },
+          snippet = {
+            expand = function(args)
+              vim.fn["vsnip#anonymous"](args.body)
+            end,
+          },
         }
       end,
   }
  }
 }
+
+
+
+
+
+
+
diff --git a/lua/plugs/nvimtree.lua b/lua/plugs/nvimtree.lua
index 880b3b3..1868080 100644
--- a/lua/plugs/nvimtree.lua
+++ b/lua/plugs/nvimtree.lua
@@ -16,8 +16,15 @@ return {
           api.config.mappings.default_on_attach(bufnr)
 
           -- override a default
+          G.map({
+            {'n', 'v', api.node.open.vertical, {buffer = bufnr}},
+            {'n', 's', api.node.open.horizontal, {buffer = bufnr}},
+          })
+
           G.delmap({
             {'n', '<C-e>', { buffer = bufnr }},
+            {'n', '<C-v>', { buffer = bufnr }},
+            {'n', '<C-x>', { buffer = bufnr }},
           })
 
         end