diff --git a/src/main/java/com/jaoafa/mymaid4/command/Cmd_jaoBox.java b/src/main/java/com/jaoafa/mymaid4/command/Cmd_jaoBox.java
index 6b7b16dc5..50f5666e9 100644
--- a/src/main/java/com/jaoafa/mymaid4/command/Cmd_jaoBox.java
+++ b/src/main/java/com/jaoafa/mymaid4/command/Cmd_jaoBox.java
@@ -17,6 +17,7 @@
 import com.jaoafa.mymaid4.Main;
 import com.jaoafa.mymaid4.lib.CommandPremise;
 import com.jaoafa.mymaid4.lib.MyMaidCommand;
+import com.jaoafa.mymaid4.lib.MyMaidData;
 import com.jaoafa.mymaid4.lib.MyMaidLibrary;
 import net.kyori.adventure.text.Component;
 import net.kyori.adventure.text.JoinConfiguration;
@@ -31,6 +32,7 @@
 import org.bukkit.inventory.ItemStack;
 
 import java.io.File;
+import java.util.Arrays;
 import java.util.List;
 import java.util.Objects;
 
@@ -78,6 +80,11 @@ void jaoBox(CommandContext<CommandSender> context) {
     void jaoBoxRegister(CommandContext<CommandSender> context) {
         Player player = (Player) context.getSender();
 
+        if (!isAMR(player)) {
+            SendMessage(player, details(), "あなたにはjaoBoxを登録モードで開く権限がありません。");
+            return;
+        }
+
         openBox(player, registerTitleComponent);
         SendMessage(player, details(), "jaoBoxを登録モードで開きました。Escキーで閉じると保存します。");
     }
@@ -96,10 +103,13 @@ public static void openBox(Player player, Component title) {
             @SuppressWarnings("unchecked") // 未チェックのキャスト。YamlConfigurationの仕様によるもの
             ItemStack[] items = ((List<ItemStack>) Objects.requireNonNull(yaml.get("items"))).toArray(new ItemStack[0]);
             inventory.setContents(items);
+
+            if (title == registerTitleComponent) {
+                MyMaidData.setBoxPrevious(player.getUniqueId(), Arrays.stream(items).toList());
+            }
         }
 
         player.getWorld().playSound(player.getLocation(), Sound.BLOCK_CHEST_OPEN, 1.0F, 1.0F);
         player.openInventory(inventory);
-
     }
 }
diff --git a/src/main/java/com/jaoafa/mymaid4/event/Event_jaoBox.java b/src/main/java/com/jaoafa/mymaid4/event/Event_jaoBox.java
index d3f20c60e..0d61e5983 100644
--- a/src/main/java/com/jaoafa/mymaid4/event/Event_jaoBox.java
+++ b/src/main/java/com/jaoafa/mymaid4/event/Event_jaoBox.java
@@ -11,9 +11,12 @@
 
 package com.jaoafa.mymaid4.event;
 
+import com.jaoafa.mymaid4.Main;
 import com.jaoafa.mymaid4.command.Cmd_jaoBox;
 import com.jaoafa.mymaid4.lib.EventPremise;
+import com.jaoafa.mymaid4.lib.MyMaidData;
 import com.jaoafa.mymaid4.lib.MyMaidLibrary;
+import com.jaoafa.mymaid4.lib.NMSManager;
 import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
 import org.bukkit.ChatColor;
 import org.bukkit.Material;
@@ -31,10 +34,16 @@
 import org.bukkit.event.inventory.InventoryCloseEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
 import org.bukkit.inventory.Inventory;
+import org.bukkit.inventory.ItemStack;
 
+import javax.annotation.Nullable;
 import java.io.IOException;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.StandardOpenOption;
 import java.util.Arrays;
 import java.util.List;
+import java.util.Objects;
 
 public class Event_jaoBox extends MyMaidLibrary implements Listener, EventPremise {
     @Override
@@ -52,6 +61,7 @@ public void onRegisterInventoryClose(InventoryCloseEvent event) {
         if (event.getView().title() != Cmd_jaoBox.registerTitleComponent) {
             return;
         }
+
         Inventory inventory = event.getInventory();
         YamlConfiguration yaml = new YamlConfiguration();
         yaml.set("items", inventory.getContents());
@@ -60,10 +70,41 @@ public void onRegisterInventoryClose(InventoryCloseEvent event) {
         } catch (IOException e) {
             e.printStackTrace();
         }
+
+        List<ItemStack> oldItems = MyMaidData.getBoxPrevious(player.getUniqueId());
+        for (int i = 0; i < inventory.getSize(); i++) {
+            ItemStack oldItem = oldItems.get(i);
+            ItemStack newItem = inventory.getItem(i);
+
+            if (Objects.equals(oldItem, newItem)) {
+                continue;
+            }
+
+            logging(player, i, oldItem, newItem);
+        }
+
         player.getWorld().playSound(player.getLocation(), Sound.BLOCK_CHEST_LOCKED, 1.0F, 1.0F);
         event.getPlayer().sendMessage("[jaoBox] " + ChatColor.GREEN + "jaoBoxを更新しました。");
     }
 
+    private void logging(Player player, int slot, @Nullable ItemStack oldItem, @Nullable ItemStack newItem) {
+        Path jaoBoxLogPath = Path.of(Main.getJavaPlugin().getDataFolder().getPath(), "jaoBoxLog.tsv");
+        String message = String.join("\t",
+            player.getName(),
+            player.getUniqueId().toString(),
+            Integer.toString(slot),
+            oldItem != null ? oldItem.getType().toString() : null,
+            oldItem != null ? NMSManager.getNBT(oldItem) : null,
+            newItem != null ? newItem.getType().toString() : null,
+            newItem != null ? NMSManager.getNBT(newItem) : null
+        );
+        try {
+            Files.writeString(jaoBoxLogPath, message + "\n", StandardOpenOption.CREATE, StandardOpenOption.APPEND);
+        } catch (IOException e) {
+            e.printStackTrace();
+        }
+    }
+
     @EventHandler(priority = EventPriority.HIGHEST)
     public void onClickBox(PlayerInteractEvent event) {
         Player player = event.getPlayer();
diff --git a/src/main/java/com/jaoafa/mymaid4/lib/MyMaidData.java b/src/main/java/com/jaoafa/mymaid4/lib/MyMaidData.java
index 9c5cd012e..adbe236d3 100644
--- a/src/main/java/com/jaoafa/mymaid4/lib/MyMaidData.java
+++ b/src/main/java/com/jaoafa/mymaid4/lib/MyMaidData.java
@@ -15,6 +15,7 @@
 import org.bukkit.Location;
 import org.bukkit.Material;
 import org.bukkit.entity.Player;
+import org.bukkit.inventory.ItemStack;
 import org.json.JSONObject;
 
 import javax.annotation.Nullable;
@@ -45,6 +46,7 @@ public class MyMaidData {
     private static CarrierPigeon carrierPigeon = null;
     private static Blacklist blacklist;
     private static Map<Material, List<String>> creativeInventoryWithNBTs = new HashMap<>(); // material : nbt
+    private static final Map<UUID, List<ItemStack>> jaoBoxPrevious = new HashMap<>();
 
     @Nullable
     public static TextChannel getReportChannel() {
@@ -250,4 +252,15 @@ public static void setCreativeInventoryWithNBTs(Map<Material, List<String>> crea
     public static VariableManager getVariableManager() {
         return variableManager;
     }
+
+    public static void setBoxPrevious(UUID uuid, List<ItemStack> items) {
+        jaoBoxPrevious.put(uuid, items);
+    }
+
+    public static List<ItemStack> getBoxPrevious(UUID uuid) {
+        if (!jaoBoxPrevious.containsKey(uuid)) {
+            return new ArrayList<>();
+        }
+        return jaoBoxPrevious.get(uuid);
+    }
 }