diff --git a/AgileWorks/AgileWorks/Login/View/LoginViewController.swift b/AgileWorks/AgileWorks/Login/View/LoginViewController.swift
index efbfca4334ba141a3beda6c94fc27a58f1f0caed..60276be4635e1e928486f19ab2969424b9741f77 100644
--- a/AgileWorks/AgileWorks/Login/View/LoginViewController.swift
+++ b/AgileWorks/AgileWorks/Login/View/LoginViewController.swift
@@ -118,6 +118,16 @@ class LoginViewController: UIViewController {
         contextTextField.frame.origin.x = slashLabel.frame.origin.x + slashWidth
     }
 
+    override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
+        super.viewWillTransition(to: size, with: coordinator)
+
+        coordinator.animate(alongsideTransition: nil, completion: {_ in
+            if self.qrCodeReader.delegate != nil {
+                self.qrCodeReader.previewLayerTransition(self.view)
+            }
+        })
+    }
+
     override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
         self.view.endEditing(true)
     }
@@ -130,7 +140,6 @@ class LoginViewController: UIViewController {
         //サーバー名コンテキストパスの保存
         KeychainDataStore().writeServerURL(serverURL: serverHost)
         KeychainDataStore().writeContextPath(contextPath: context)
-
         presenter.fetch { result in
             switch result {
             case .success:
diff --git a/AgileWorks/Common/QRCodeReader.swift b/AgileWorks/Common/QRCodeReader.swift
index 00f31c42af6a6f9a531f2753a2e97d997202a883..e66c8539443bd3fecb8a4ec979c52f333bd186c6 100644
--- a/AgileWorks/Common/QRCodeReader.swift
+++ b/AgileWorks/Common/QRCodeReader.swift
@@ -78,8 +78,22 @@ public class QRCodeReader {
         previewLayer.frame = view.bounds
         //previewLayer.frame = CGRect(x: 0, y: 90, width: view.frame.width, height: view.frame.height - 90)
         previewLayer.videoGravity = .resizeAspectFill
+        self.setVideoOrientation()
         view.layer.addSublayer(previewLayer)
     }
+    // pareviewLayter 再設定
+    public func previewLayerTransition(_ view: UIView) {
+        self.previewLayer.frame = view.bounds
+        self.setReadRangeFrame()
+        self.setGuideFrame()
+        self.setVideoOrientation()
+    }
+    // 画面向きをセット
+    private func setVideoOrientation() {
+        if let orientation = self.convertUIOrientation2VideoOrientation(function: { return self.appOrientation() }) {
+            self.previewLayer.connection?.videoOrientation = orientation
+        }
+    }
 
     // 認識QRコード確認表示設定
     private func targetCapture(borderWidth: Int, borderColor: CGColor) {
@@ -98,10 +112,16 @@ public class QRCodeReader {
         self.rangeView.layer.borderWidth = 1
         self.rangeView.layer.borderColor = UIColor.red.cgColor
         if let preview = self.preview {
-            self.rangeView.frame = CGRect(x: preview.frame.size.width * frame.minX, y: preview.frame.size.height * frame.minY, width: preview.frame.size.width * frame.size.width, height: preview.frame.size.height * frame.size.height)
+            self.setReadRangeFrame()
             preview.addSubview(rangeView)
         }
     }
+    // 読取範囲のフレーム設定
+    private func setReadRangeFrame(frame: CGRect = CGRect(x: 0.2, y: 0.3, width: 0.6, height: 0.4)) {
+        if let preview = self.preview {
+            self.rangeView.frame = CGRect(x: preview.frame.size.width * frame.minX, y: preview.frame.size.height * frame.minY, width: preview.frame.size.width * frame.size.width, height: preview.frame.size.height * frame.size.height)
+        }
+    }
 
     // キャンセルボタン生成
     private func cancelButton() {
@@ -122,14 +142,19 @@ public class QRCodeReader {
     public func setCameraGuide(guide: String) {
         self.cameraGuideLbl = UILabel()
         if let preview = self.preview {
-            self.cameraGuideLbl.frame = CGRect(x: 0, y: preview.frame.height - 60, width: preview.frame.width, height: 30)
+            self.setGuideFrame()
             self.cameraGuideLbl.text = guide
             self.cameraGuideLbl.textColor = .white
             self.cameraGuideLbl.textAlignment = NSTextAlignment.center
             preview.addSubview(cameraGuideLbl)
         }
     }
-
+    // ガイダンスフレーム設定
+    private func setGuideFrame() {
+        if let preview = self.preview {
+            self.cameraGuideLbl.frame = CGRect(x: 0, y: preview.frame.height - 60, width: preview.frame.width, height: 30)
+        }
+    }
     // カメラ停止
     public func stopRunning() {
         if self.captureSession == nil { return }
@@ -171,4 +196,23 @@ public class QRCodeReader {
     func cancelBtnTaped(_ sender: UIButton) {
         self.stopRunning()
     }
+
+    private func appOrientation() -> UIInterfaceOrientation {
+        return UIApplication.shared.statusBarOrientation
+    }
+    // UIInterfaceOrientation -> AVCaptureVideoOrientation に convert
+    private func convertUIOrientation2VideoOrientation(function: () -> UIInterfaceOrientation) -> AVCaptureVideoOrientation? {
+        let val = function()
+        switch val {
+        case UIInterfaceOrientation.unknown:
+            return nil
+        default:
+            return ([
+                UIInterfaceOrientation.portrait: AVCaptureVideoOrientation.portrait,
+                UIInterfaceOrientation.portraitUpsideDown: AVCaptureVideoOrientation.portraitUpsideDown,
+                UIInterfaceOrientation.landscapeLeft: AVCaptureVideoOrientation.landscapeLeft,
+                UIInterfaceOrientation.landscapeRight: AVCaptureVideoOrientation.landscapeRight
+            ])[val]
+        }
+    }
 }