diff --git a/app/src/compornents/molecules/navigationButton.tsx b/app/src/compornents/molecules/navigationButton.tsx
index 88fc5835..f01e8ef4 100644
--- a/app/src/compornents/molecules/navigationButton.tsx
+++ b/app/src/compornents/molecules/navigationButton.tsx
@@ -24,13 +24,13 @@ const NavigationButton: React.FC<{forwardName: string, forward: () => void, back
   return (
     <Box className={classes.naviButton}>
       <Box m={2}>
-        <Button variant="contained" color="primary" onClick={back}>
-        {backName}
+        <Button variant="contained" color="primary" onClick={forward}>
+        {forwardName}
         </Button>
       </Box>
       <Box m={2}>
-        <Button variant="contained" color="primary" onClick={forward}>
-        {forwardName}
+        <Button variant="contained" color="primary" onClick={back}>
+        {backName}
         </Button>
       </Box>
     </Box>
diff --git a/app/src/compornents/pages/productDetailPage.tsx b/app/src/compornents/pages/productDetailPage.tsx
index f2ba259a..be36ccfc 100644
--- a/app/src/compornents/pages/productDetailPage.tsx
+++ b/app/src/compornents/pages/productDetailPage.tsx
@@ -112,7 +112,7 @@ const ProductDetailPage: React.FC = () => {
   return (
     <div className={classes.root}>
       <ProductDetail {...data} />
-      <NavigationButton forwardName="カートに入れる" forward={inputCart} backName="商品一覧へ戻る" back={back} />
+      <NavigationButton forwardName="購入" forward={inputCart} backName="商品一覧へ戻る" back={back} />
       <ProductInputDialog openFlag={open} forward={forward} back={back} />
     </div>
   )