diff --git a/lua/config/nvim-ufo.lua b/lua/config/nvim-ufo.lua
index 9e42547..8fa13d9 100644
--- a/lua/config/nvim-ufo.lua
+++ b/lua/config/nvim-ufo.lua
@@ -7,6 +7,15 @@ vim.o.foldenable = true
 vim.keymap.set('n', 'zR', require('ufo').openAllFolds)
 vim.keymap.set('n', 'zM', require('ufo').closeAllFolds)
 
+-- preview the foled lines in floating window
+vim.keymap.set('n', '<tab>p', function()
+    local winid = require('ufo').peekFoldedLinesUnderCursor()
+    if not winid then
+        -- nvimlsp
+        vim.lsp.buf.hover()
+    end
+end)
+
 local handler = function(virtText, lnum, endLnum, width, truncate)
     local newVirtText = {}
     local suffix = ('  %d '):format(endLnum - lnum)