diff --git a/README.rdoc b/README.rdoc
index 3b50b6d..fcb2698 100644
--- a/README.rdoc
+++ b/README.rdoc
@@ -60,6 +60,7 @@ commands
     gisty sync                          sync remote gist. (clone all remote gist)
     gisty sync_delete                   sync remote gist. delete local gist if remote gist was deleted.
     gisty pull_all                      pull all gist.
+    gisty delete_local_all              delete all local gist.
     gisty about                         show about gisty
     gisty help                          show help
 
diff --git a/gisty.gemspec b/gisty.gemspec
index 5ab2ba5..e35e51c 100644
--- a/gisty.gemspec
+++ b/gisty.gemspec
@@ -11,7 +11,7 @@ Gem::Specification.new do |s|
   s.email = "http://mailhide.recaptcha.net/d?k=01AhB7crgrlHptVaYRD0oPwA==&c=L_iqOZrGmo6hcGpPTFg1QYnjr-WpAStyQ4Y8ShfgOHs="
   s.executables = ["gisty"]
   s.extra_rdoc_files = ["README.rdoc"]
-  s.files = ["README.rdoc", "Rakefile", "bin/gisty", "test/fixtures", "test/fixtures/bar.user.js", "test/fixtures/foo.user.js", "test/fixtures/gists_1", "test/fixtures/gists_2", "test/fixtures/gists_3", "test/fixtures/gists_post", "test/gisty_test.rb", "test/test_helper.rb", "lib/commands", "lib/commands/about.rb", "lib/commands/gyast.rb", "lib/commands/help.rb", "lib/commands/list.rb", "lib/commands/post.rb", "lib/commands/private_post.rb", "lib/commands/pull_all.rb", "lib/commands/sync.rb", "lib/commands/sync_delete.rb", "lib/gisty.rb"]
+  s.files = ["README.rdoc", "Rakefile", "bin/gisty", "test/fixtures", "test/fixtures/bar.user.js", "test/fixtures/foo.user.js", "test/fixtures/gists_1", "test/fixtures/gists_2", "test/fixtures/gists_3", "test/fixtures/gists_post", "test/gisty_test.rb", "test/test_helper.rb", "lib/commands", "lib/commands/about.rb", "lib/commands/delete_local_all.rb", "lib/commands/gyast.rb", "lib/commands/help.rb", "lib/commands/list.rb", "lib/commands/post.rb", "lib/commands/private_post.rb", "lib/commands/pull_all.rb", "lib/commands/sync.rb", "lib/commands/sync_delete.rb", "lib/gisty.rb"]
   s.homepage = "http://github.com/swdyh/gisty/tree/master"
   s.rdoc_options = ["--title", "gisty documentation", "--charset", "utf-8", "--line-numbers", "--main", "README.rdoc", "--inline-source", "--exclude", "^(examples|extras)/"]
   s.require_paths = ["lib"]
diff --git a/lib/commands/delete_local_all.rb b/lib/commands/delete_local_all.rb
new file mode 100644
index 0000000..2407ef6
--- /dev/null
+++ b/lib/commands/delete_local_all.rb
@@ -0,0 +1,5 @@
+cmd :delete_local_all, '', 'delete all local gist' do
+  @g.delete_local_all
+  puts '---'
+  puts 'delete_local_all finished.'
+end
diff --git a/lib/gisty.rb b/lib/gisty.rb
index 84ff1eb..0b8c7e6 100644
--- a/lib/gisty.rb
+++ b/lib/gisty.rb
@@ -129,6 +129,18 @@ def delete id
     FileUtils.rm_rf @dir.join(id) if @dir.join(id).exist?
   end
 
+  def delete_local_all
+    local = local_ids
+    FileUtils.cd @dir do
+      if local.size > 0
+        local.each do |id|
+          puts "delete #{id}"
+          delete id
+        end
+      end
+    end
+  end
+
   def sync delete = false
     local = local_ids
     FileUtils.cd @dir do