diff --git a/EcomAnalysis/Form1.Designer.cs b/EcomAnalysis/Form1.Designer.cs
index 73c1371..aa045e7 100644
--- a/EcomAnalysis/Form1.Designer.cs
+++ b/EcomAnalysis/Form1.Designer.cs
@@ -384,6 +384,7 @@
             // 
             // Form1
             // 
+            this.AllowDrop = true;
             this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
             this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
             this.ClientSize = new System.Drawing.Size(652, 597);
@@ -415,6 +416,8 @@
             this.Name = "Form1";
             this.Text = "Ecom Analysis";
             this.Load += new System.EventHandler(this.Form1_Load);
+            this.DragDrop += new System.Windows.Forms.DragEventHandler(this.Form1_DragDrop);
+            this.DragEnter += new System.Windows.Forms.DragEventHandler(this.Form1_DragEnter);
             this.ResumeLayout(false);
             this.PerformLayout();
 
diff --git a/EcomAnalysis/Form1.cs b/EcomAnalysis/Form1.cs
index 852d112..7adea3c 100644
--- a/EcomAnalysis/Form1.cs
+++ b/EcomAnalysis/Form1.cs
@@ -49,12 +49,28 @@
             TxtLogFilename.Text = "not opened";
             var args = Environment.GetCommandLineArgs();
             if (args.Length > 1) {
+                ClearData();
                 ReadCSV(args[1]);
                 Analyze();
             }
         }
 
         /// <summary>
+        /// データ初期化
+        /// </summary>
+        private void ClearData() {
+            _Data.Clear();
+            _SceneTable.Clear();
+
+            listView1.Items.Clear();
+            foreach (var ctl in this.Controls) {
+                if (((Control)ctl).GetType().Equals(typeof(TextBox))){
+                    ((Control)ctl).Text = "";
+                }
+            }
+        }
+
+        /// <summary>
         /// 解析
         /// </summary>
         private void Analyze() {
@@ -239,5 +255,31 @@
                 $"{_ScMean.Blink},{_ScMean.Pupil.R:0.00},{_ScMean.Pupil.L:0.00}");
             sr.Close();
         }
+
+        /// <summary>
+        /// ドラッグが入ったとき
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void Form1_DragEnter(object sender, DragEventArgs e) {
+            if (e.Data.GetDataPresent(DataFormats.FileDrop))
+                e.Effect = DragDropEffects.Copy;
+            else 
+                e.Effect = DragDropEffects.None;
+        }
+
+        /// <summary>
+        /// ファイルがドロップされた時
+        /// </summary>
+        /// <param name="sender"></param>
+        /// <param name="e"></param>
+        private void Form1_DragDrop(object sender, DragEventArgs e) {
+            var filename = (string[])e.Data.GetData(DataFormats.FileDrop, false);
+            if (Path.GetExtension(filename[0]) == ".csv") {
+                ClearData();
+                ReadCSV(filename[0]);
+                Analyze();
+            }
+        }
     }
 }