diff --git a/lua/lsp/cmp.lua b/lua/lsp/cmp.lua
index e34e1a2..8c794ee 100644
--- a/lua/lsp/cmp.lua
+++ b/lua/lsp/cmp.lua
@@ -82,5 +82,5 @@ local cmp_autopairs = require("nvim-autopairs.completion.cmp")
 cmp.event:on("confirm_done", cmp_autopairs.on_confirm_done())
 
 -- use friendly snippet
-require("luasnip.loaders.from_vscode").lazy_load()
+require("luasnip.loaders.from_vscode").lazy_load({ exclude = { "tex" } })
 require("luasnip.loaders.from_vscode").lazy_load({ paths = "~/.config/nvim/snippets" })
diff --git a/lua/plugin-config/indent-blankline.lua b/lua/plugin-config/indent-blankline.lua
index 4cd0d5e..750f9b6 100644
--- a/lua/plugin-config/indent-blankline.lua
+++ b/lua/plugin-config/indent-blankline.lua
@@ -1,7 +1,39 @@
-require("indent_blankline").setup({
-	-- for example, context is off by default, use this to turn it on
-	show_current_context = true,
-	indent_blankline_use_treesitter = true,
-	indent_blankline_use_treesitter_scope = true,
-	indent_blankline_char = "¦",
+local highlight = {
+	"RainbowRed",
+	"RainbowYellow",
+	"RainbowBlue",
+	"RainbowOrange",
+	"RainbowGreen",
+	"RainbowViolet",
+	"RainbowCyan",
+}
+
+local hooks = require("ibl.hooks")
+-- create the highlight groups in the highlight setup hook, so they are reset
+-- every time the colorscheme changes
+hooks.register(hooks.type.HIGHLIGHT_SETUP, function()
+	vim.api.nvim_set_hl(0, "RainbowRed", { fg = "#E06C75" })
+	vim.api.nvim_set_hl(0, "RainbowYellow", { fg = "#E5C07B" })
+	vim.api.nvim_set_hl(0, "RainbowBlue", { fg = "#61AFEF" })
+	vim.api.nvim_set_hl(0, "RainbowOrange", { fg = "#D19A66" })
+	vim.api.nvim_set_hl(0, "RainbowGreen", { fg = "#98C379" })
+	vim.api.nvim_set_hl(0, "RainbowViolet", { fg = "#C678DD" })
+	vim.api.nvim_set_hl(0, "RainbowCyan", { fg = "#56B6C2" })
+end)
+
+require("ibl").setup({
+	indent = { highlight = highlight },
+	exclude = {
+		filetypes = {
+			"lspinfo",
+			"packer",
+			"checkhealth",
+			"help",
+			"man",
+			"gitcommit",
+			"TelescopePrompt",
+			"TelescopeResults",
+			"dashboard",
+		},
+	},
 })
diff --git a/lua/plugin-config/lua_snip.lua b/lua/plugin-config/lua_snip.lua
index 0b79f68..53ed477 100644
--- a/lua/plugin-config/lua_snip.lua
+++ b/lua/plugin-config/lua_snip.lua
@@ -55,14 +55,54 @@ ls.add_snippets("markdown", {
 		t({ "", "", "---", "" }),
 		i(0),
 	}),
+	s("$", { -- inline formula
+		t("$"),
+		i(1),
+		t("$"),
+	}),
+	s("formula", { -- outline formula
+		t("$$"),
+		t({ "", "" }),
+		i(1),
+		t({ "", "" }),
+		t("$$"),
+	}),
+	s("mathbf", {
+		t("\\mathbf{"),
+		i(1),
+		t("}"),
+	}),
+	s("betahat", {
+		t("\\hat{\\beta}"),
+	}),
 })
 
 ls.add_snippets("tex", {
+	s("formula", {
+		t("\\("), -- 输出 \(
+		i(1), -- 输入补全内容
+		t("\\)"), -- 输出 \)
+	}),
 	s("usepackage", {
 		t("\\usepackage{"),
 		i(1),
 		t("}"),
 	}),
+	s("Italic", {
+		t("\\textit{"),
+		i(1),
+		t("}"),
+	}),
+	s("bold", {
+		t("\\textbf{"),
+		i(1),
+		t("}"),
+	}),
+	s("underline", {
+		t("\\underline{"),
+		i(1),
+		t("}"),
+	}),
 	s("begin", {
 		t("\\begin{"),
 		i(1, "enumerate"),
diff --git a/lua/plugin-config/vimtex.lua b/lua/plugin-config/vimtex.lua
index 4367b52..8d18ea7 100644
--- a/lua/plugin-config/vimtex.lua
+++ b/lua/plugin-config/vimtex.lua
@@ -7,7 +7,7 @@ vim.cmd("syntax enable")
 
 -- Viewer options: One may configure the viewer either by specifying a built-in
 -- viewer method:
-vim.g.vimtex_view_method = "skim"
+vim.g.vimtex_view_method = "sioyek"
 -- vim.g.vimtex_view_general_options = "--unique file:@pdf\\#src:@line@tex"
 
 vim.g.vimtex_complete_close_braces = 1