diff --git a/src/Commands/Checkout.cs b/src/Commands/Checkout.cs
index f3d976da..b6d6ec41 100644
--- a/src/Commands/Checkout.cs
+++ b/src/Commands/Checkout.cs
@@ -33,7 +33,7 @@ namespace SourceGit.Commands {
 
         public bool Files(List<string> files) {
             StringBuilder builder = new StringBuilder();
-            builder.Append("checkout -qf --");
+            builder.Append("checkout -f -q --");
             foreach (var f in files) {
                 builder.Append(" \"");
                 builder.Append(f);
diff --git a/src/Commands/Clean.cs b/src/Commands/Clean.cs
index 83de46cd..38a9a477 100644
--- a/src/Commands/Clean.cs
+++ b/src/Commands/Clean.cs
@@ -1,3 +1,6 @@
+using System.Collections.Generic;
+using System.Text;
+
 namespace SourceGit.Commands {
     /// <summary>
     ///     清理指令
@@ -8,5 +11,18 @@ namespace SourceGit.Commands {
             Cwd = repo;
             Args = "clean -qfd";
         }
+
+        public Clean(string repo, List<string> files) {
+            StringBuilder builder = new StringBuilder();
+            builder.Append("clean -qfd --");
+            foreach (var f in files) {
+                builder.Append(" \"");
+                builder.Append(f);
+                builder.Append("\"");
+            }
+
+            Cwd = repo;
+            Args = builder.ToString();
+        }
     }
 }
diff --git a/src/Commands/Discard.cs b/src/Commands/Discard.cs
index 42b4005e..7358ae51 100644
--- a/src/Commands/Discard.cs
+++ b/src/Commands/Discard.cs
@@ -7,31 +7,37 @@ namespace SourceGit.Commands {
     /// </summary>
     public class Discard {
         private string repo = null;
-        private List<string> files = new List<string>();
 
-        public Discard(string repo, List<Models.Change> changes) {
+        public Discard(string repo) {
             this.repo = repo;
-            
-            if (changes != null && changes.Count > 0) {
-                foreach (var c in changes) {
-                    if (c.WorkTree == Models.Change.Status.Untracked || c.WorkTree == Models.Change.Status.Added) continue;
-                    files.Add(c.Path);
-                }
-            }
         }
 
-        public bool Exec() {
-            if (files.Count == 0) {
-                new Reset(repo, "HEAD", "--hard").Exec();
-            } else {
-                for (int i = 0; i < files.Count; i += 10) {
-                    var count = Math.Min(10, files.Count - i);
-                    new Checkout(repo).Files(files.GetRange(i, count));
+        public void Whole() {            
+            new Reset(repo, "HEAD", "--hard").Exec();
+            new Clean(repo).Exec();
+        }
+
+        public void Changes(List<Models.Change> changes) {
+            var needClean = new List<string>();
+            var needCheckout = new List<string>();
+
+            foreach (var c in changes) {
+                if (c.WorkTree == Models.Change.Status.Untracked || c.WorkTree == Models.Change.Status.Added) {
+                    needClean.Add(c.Path);
+                } else {
+                    needCheckout.Add(c.Path);
                 }
             }
 
-            new Clean(repo).Exec();
-            return true;
+            for (int i = 0; i < needClean.Count; i += 10) {
+                var count = Math.Min(10, needClean.Count - i);
+                new Clean(repo, needClean.GetRange(i, count)).Exec();
+            }
+
+            for (int i = 0; i < needCheckout.Count; i += 10) {
+                var count = Math.Min(10, needCheckout.Count - i);
+                new Checkout(repo).Files(needCheckout.GetRange(i, count));
+            }
         }
     }
 }
diff --git a/src/Views/Popups/Discard.xaml.cs b/src/Views/Popups/Discard.xaml.cs
index 54720667..da855147 100644
--- a/src/Views/Popups/Discard.xaml.cs
+++ b/src/Views/Popups/Discard.xaml.cs
@@ -33,7 +33,12 @@ namespace SourceGit.Views.Popups {
         public override Task<bool> Start() {
             return Task.Run(() => {
                 Models.Watcher.SetEnabled(repo, false);
-                new Commands.Discard(repo, changes).Exec();
+                var cmd = new Commands.Discard(repo);
+                if (changes == null || changes.Count == 0) {
+                    cmd.Whole();
+                } else {
+                    cmd.Changes(changes);
+                }
                 Models.Watcher.SetEnabled(repo, true);
                 return true;
             });