diff --git a/src/main/java/istlab/KisoJikken/CommandRunner.java b/src/main/java/istlab/KisoJikken/CommandRunner.java
index d71aed3..dfb6acf 100644
--- a/src/main/java/istlab/KisoJikken/CommandRunner.java
+++ b/src/main/java/istlab/KisoJikken/CommandRunner.java
@@ -23,7 +23,7 @@
             thread.start();
             // runB.setText("Stop");
         } else {
-            process.destroy();
+            process.destroyForcibly();
             thread = null;
             // runB.setText("Run");
         }
diff --git a/src/main/java/istlab/KisoJikken/JTAConsole.java b/src/main/java/istlab/KisoJikken/JTAConsole.java
index 71caa66..5156d37 100644
--- a/src/main/java/istlab/KisoJikken/JTAConsole.java
+++ b/src/main/java/istlab/KisoJikken/JTAConsole.java
@@ -150,7 +150,7 @@
         } catch (IOException e1) {
             e1.printStackTrace();
         }
-        process.destroy();
+        process.destroyForcibly();
         winStack.remove(this);
         setVisible(false);
         if (!process.isAlive()) {
diff --git a/src/main/java/istlab/KisoJikken/Launcher.java b/src/main/java/istlab/KisoJikken/Launcher.java
index b8c78a1..7277ae7 100644
--- a/src/main/java/istlab/KisoJikken/Launcher.java
+++ b/src/main/java/istlab/KisoJikken/Launcher.java
@@ -160,7 +160,7 @@
             if (!isAll){
                 if (proc.isAlive()) continue;
             }
-            proc.destroy();
+            proc.destroyForcibly();
             toberemoved.add(proc);
         }
         for(Process delproc: toberemoved){
diff --git a/src/main/java/istlab/KisoJikken/ScriptRunner.java b/src/main/java/istlab/KisoJikken/ScriptRunner.java
index 87aa15e..354d77f 100644
--- a/src/main/java/istlab/KisoJikken/ScriptRunner.java
+++ b/src/main/java/istlab/KisoJikken/ScriptRunner.java
@@ -23,7 +23,7 @@
             thread.start();
             runB.setText("Stop");
         } else {
-            process.destroy();
+            process.destroyForcibly();
             thread = null;
             runB.setText("Run");
         }
diff --git a/src/main/java/istlab/KisoJikken/ShellScriptPanel.java b/src/main/java/istlab/KisoJikken/ShellScriptPanel.java
index 49ec7d7..f3a20db 100644
--- a/src/main/java/istlab/KisoJikken/ShellScriptPanel.java
+++ b/src/main/java/istlab/KisoJikken/ShellScriptPanel.java
@@ -50,7 +50,7 @@
             thread = new Thread(this);
             thread.start();
         } else {
-            process.destroy();
+            process.destroyForcibly();
             thread = null;
         }
     }