diff --git a/.gitignore b/.gitignore
index 5509150..8cb205e 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,3 +1 @@
-./plugin/packer_compiled.lua
-
-plugin
\ No newline at end of file
+plugin
diff --git a/ftplugin/markdown.lua b/ftplugin/markdown.lua
new file mode 100644
index 0000000..1ab7de4
--- /dev/null
+++ b/ftplugin/markdown.lua
@@ -0,0 +1 @@
+vim.cmd("TableModeEnable")
diff --git a/lua/basic.lua b/lua/basic.lua
index 2a847b4..9d7f4de 100644
--- a/lua/basic.lua
+++ b/lua/basic.lua
@@ -3,7 +3,7 @@ local M = {}
 M.load_default_options = function()
 	local set_options = {
 		backup = false, -- creates a backup file
-		clipboard = "unnamedplus", -- allows neovim to access the system clipboard
+		clipboard = "unnamed", -- allows neovim to access the system clipboard
 		cmdheight = 1, -- more space in the neovim command line for displaying messages
 		completeopt = { "menuone", "noselect" },
 		conceallevel = 0, -- so that `` is visible in markdown files
diff --git a/lua/keybindings.lua b/lua/keybindings.lua
index 08edb90..ef676d5 100644
--- a/lua/keybindings.lua
+++ b/lua/keybindings.lua
@@ -28,7 +28,7 @@ wk.register({
 -- markdown 表格
 wk.register({
 	["<Leader>t"] = {
-		name = "+Table",
+		name = "",
 	},
 })
 
@@ -105,6 +105,7 @@ wk.register({
 		b = { ":bp<CR>", "Last buffer" },
 		n = { ":ls<CR>", "Buffer numbers" },
 		t = { ":b ", "To buffer" },
+		c = { ":noh<CR>", "Cancel highlight" },
 	},
 })
 -- change left and right tab
@@ -132,8 +133,16 @@ map("n", "f", ":Telescope find_files<CR>", opt)
 pluginKeys.cmp = function(cmp)
 	return {
 		-- next option
-		-- 下一个
-		["<Tab>"] = cmp.mapping.select_next_item(),
+		["<Tab>"] = cmp.mapping(function(fallback)
+			if cmp.visible() then
+				cmp.select_next_item()
+			elseif require("luasnip").expand_or_jumpable() then
+				require("luasnip").expand_or_jump()
+			else
+				fallback()
+			end
+		end, { "i", "s" }), -- 下一个
+
 		["<Up>"] = cmp.mapping.select_prev_item(),
 
 		["<CR>"] = cmp.mapping.confirm({
diff --git a/lua/lsp/cmp.lua b/lua/lsp/cmp.lua
index 73c8d7c..9c7c414 100644
--- a/lua/lsp/cmp.lua
+++ b/lua/lsp/cmp.lua
@@ -1,67 +1,80 @@
-local lspkind = require('lspkind')
-local cmp = require'cmp'
+local lspkind = require("lspkind")
+local cmp = require("cmp")
 
-cmp.setup {
-  -- 指定 snippet 引擎
-  snippet = {
-    expand = function(args)
-      -- For `vsnip` users.
-      vim.fn["vsnip#anonymous"](args.body)
+cmp.setup({
+	-- 指定 snippet 引擎
+	snippet = {
+		expand = function(args)
+			-- For `vsnip` users.
+			-- vim.fn["vsnip#anonymous"](args.body)
 
-      -- For `luasnip` users.
-      -- require('luasnip').lsp_expand(args.body)
+			-- For `luasnip` users.
+			require("luasnip").lsp_expand(args.body)
 
-      -- For `ultisnips` users.
-      -- vim.fn["UltiSnips#Anon"](args.body)
+			-- For `ultisnips` users.
+			-- vim.fn["UltiSnips#Anon"](args.body)
 
-      -- For `snippy` users.
-      -- require'snippy'.expand_snippet(args.body)
-    end,
-  },
-  -- 来源
-  sources = cmp.config.sources({
-    { name = 'nvim_lsp' },
-    -- For vsnip users.
-    { name = 'vsnip' },
-    -- For luasnip users.
-    -- { name = 'luasnip' },
-    --For ultisnips users.
-    -- { name = 'ultisnips' },
-    -- -- For snippy users.
-    -- { name = 'snippy' },
-  }, { { name = 'buffer' },
-       { name = 'path' }
-    }),
+			-- For `snippy` users.
+			-- require'snippy'.expand_snippet(args.body)
+		end,
+	},
+	-- 来源
+	sources = cmp.config.sources({
+		{ name = "nvim_lsp" },
+		-- For vsnip users.
+		-- { name = "vsnip" },
+		-- For luasnip users.
+		{ name = "luasnip" },
+		--For ultisnips users.
+		-- { name = 'ultisnips' },
+		-- -- For snippy users.
+		-- { name = 'snippy' },
+	}, { { name = "buffer" }, { name = "path" } }),
 
-  -- 快捷键
-  mapping = require('keybindings').cmp(cmp),
-  -- 使用lspkind-nvim显示类型图标
-  formatting = {
-    format = lspkind.cmp_format({
-      with_text = true, -- do not show text alongside icons
-      maxwidth = 50, -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
-      before = function (entry, vim_item)
-        -- Source 显示提示来源
-        vim_item.menu = "["..string.upper(entry.source.name).."]"
-        return vim_item
-      end
-    })
-  },
-}
+	-- 快捷键
+	mapping = require("keybindings").cmp(cmp),
+	-- 使用lspkind-nvim显示类型图标
+	formatting = {
+		format = lspkind.cmp_format({
+			with_text = true, -- do not show text alongside icons
+			maxwidth = 50, -- prevent the popup from showing more than provided characters (e.g 50 will not show more than 50 characters)
+			before = function(entry, vim_item)
+				-- Source 显示提示来源
+				vim_item.menu = "[" .. string.upper(entry.source.name) .. "]"
+				return vim_item
+			end,
+		}),
+	},
+	experimental = { ghost_text = true },
+})
 
 -- Use buffer source for `/`.
-cmp.setup.cmdline('/', {
-  sources = {
-    { name = 'buffer' }
-  }
+cmp.setup.cmdline("/", {
+	sources = {
+		{ name = "buffer" },
+	},
 })
 
-
 -- Use cmdline & path source for ':'.
-cmp.setup.cmdline(':', {
-  sources = cmp.config.sources({
-    { name = 'path' }
-  }, {
-      { name = 'cmdline' }
-    })
+cmp.setup.cmdline(":", {
+	sources = cmp.config.sources({
+		{ name = "path" },
+	}, {
+		{ name = "cmdline" },
+	}),
 })
+
+-- 浮窗参数提示
+local signature_config = {
+	debug = true,
+	hint_enable = false,
+	handler_opts = { border = "single" },
+	max_width = 80,
+}
+
+require("lsp_signature").setup(signature_config)
+
+-- 补全时自动添加括号
+local cmp_autopairs = require("nvim-autopairs.completion.cmp")
+
+cmp.event:on("confirm_done", cmp_autopairs.on_confirm_done({ map_char = { tex = "" } }))
diff --git a/lua/lsp/null-ls.lua b/lua/lsp/null-ls.lua
index a69d98c..f4f1d14 100644
--- a/lua/lsp/null-ls.lua
+++ b/lua/lsp/null-ls.lua
@@ -1,7 +1,5 @@
 local augroup = vim.api.nvim_create_augroup("LspFormatting", {})
-
--- 每次自动选择null-ls作为formatter
--- auto choose null-ls as formatter
+-- 每次自动选择null-ls作为formatter auto choose null-ls as formatter
 local lsp_formatting = function(bufnr)
 	vim.lsp.buf.format({
 		filter = function(client)
diff --git a/lua/plugin-config/lualine.lua b/lua/plugin-config/lualine.lua
index 72b62d1..402f186 100644
--- a/lua/plugin-config/lualine.lua
+++ b/lua/plugin-config/lualine.lua
@@ -1,7 +1,7 @@
 require("lualine").setup({
 	options = {
 		icons_enabled = true,
-		theme = "",
+		-- theme = "auto",
 		component_separators = { left = "", right = "" },
 		section_separators = { left = "", right = "" },
 		disabled_filetypes = {
diff --git a/lua/plugin-config/notify.lua b/lua/plugin-config/notify.lua
index 1b745ec..882de47 100644
--- a/lua/plugin-config/notify.lua
+++ b/lua/plugin-config/notify.lua
@@ -1,2 +1,10 @@
-require('notify').setup{
-}
+require("notify").setup({})
+
+local notify = vim.notify
+vim.notify = function(msg, ...)
+	if msg:match("warning: multiple different client offset_encodings") then
+		return
+	end
+
+	notify(msg, ...)
+end
diff --git a/lua/plugin-config/nvim-autopairs.lua b/lua/plugin-config/nvim-autopairs.lua
index e617103..91e9491 100644
--- a/lua/plugin-config/nvim-autopairs.lua
+++ b/lua/plugin-config/nvim-autopairs.lua
@@ -1,3 +1,3 @@
-require('nvim-autopairs').setup({
-  enable_check_bracket_line = true 
+require("nvim-autopairs").setup({
+	enable_check_bracket_line = true,
 })
diff --git a/lua/plugins.lua b/lua/plugins.lua
index 151e22d..ac9c64f 100644
--- a/lua/plugins.lua
+++ b/lua/plugins.lua
@@ -137,9 +137,12 @@ return require("packer").startup(function()
 	-- 补全引擎
 	use("hrsh7th/nvim-cmp")
 	-- Snippet 引擎
-	use("hrsh7th/vim-vsnip")
+	use({ "L3MON4D3/LuaSnip" })
+	-- use("hrsh7th/vim-vsnip")
 	-- 补全源
-	use("hrsh7th/cmp-vsnip")
+	-- use("hrsh7th/cmp-vsnip")
+	use({ "ray-x/lsp_signature.nvim" })
+	use({ "saadparwaiz1/cmp_luasnip" })
 	use("hrsh7th/cmp-nvim-lsp") -- { name = nvim_lsp }
 	use("hrsh7th/cmp-buffer") -- { name = 'buffer' },
 	use("hrsh7th/cmp-path") -- { name = 'path' }