diff --git a/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java b/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java
index 0d3a158..60fd16e 100644
--- a/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java
+++ b/src/main/java/net/lamgc/cgj/bot/BotCommandProcess.java
@@ -113,13 +113,31 @@ public class BotCommandProcess {
     public static String help() {
         StringBuilder helpStrBuilder = new StringBuilder();
         helpStrBuilder.append("CGJ Bot使用指南").append("\n");
+        helpStrBuilder.append("使用方法：.cgj <命令> [参数...]").append("\n");
+        helpStrBuilder.append("例如查询作品信息功能：").append("\n");
+        helpStrBuilder.append(".cgj artwork -id 80846159").append("\n");
         helpStrBuilder.append("目前可用的命令:").append("\n");
         helpStrBuilder.append("\t").append("ranking - 获取今天或指定日期排行榜的前10名作品").append("\n");
         helpStrBuilder.append("\t\t").append("-date - 指定查询日期(年-月-日)").append("\n");
+        helpStrBuilder.append("\t\t").append("-type - 排行榜类型(illust/插画, ugoira/动图, manga/漫画)").append("\n");
+
         helpStrBuilder.append("\t").append("search - 搜索指定关键词并显示前10个作品").append("\n");
         helpStrBuilder.append("\t\t").append("-content - 搜索内容").append("\n");
-        helpStrBuilder.append("\t").append("artworks - 获取作品的Pixiv页面").append("\n");
+
+        helpStrBuilder.append("\t").append("link - 获取作品的Pixiv页面").append("\n");
         helpStrBuilder.append("\t\t").append("-id - 作品id").append("\n");
+
+        helpStrBuilder.append("\t").append("info - 获取Pixiv作品信息").append("\n");
+        helpStrBuilder.append("\t\t").append("-id - 作品id").append("\n");
+
+        helpStrBuilder.append("\t").append("image - 获取指定作品的图片").append("\n");
+        helpStrBuilder.append("\t\t").append("-id - 作品id").append("\n");
+        helpStrBuilder.append("\t\t").append("-quality - 图片质量(original/原图 regular/预览图)").append("\n");
+        helpStrBuilder.append("\t\t").append("-page - 页数").append("\n");
+
+        helpStrBuilder.append("\t").append("report - 报告不当作品").append("\n");
+        helpStrBuilder.append("\t\t").append("-id - 作品Id").append("\n");
+        helpStrBuilder.append("\t\t").append("-msg - 报告原因").append("\n");
         return helpStrBuilder.toString();
     }
 
@@ -259,6 +277,18 @@ public class BotCommandProcess {
         return "功能未完成";
     }
 
+    /**
+     * 搜索命令
+     * @param content 搜索内容
+     * @param type 搜索类型
+     * @param area 搜索区域
+     * @param includeKeywords 包括关键字
+     * @param excludeKeywords 排除关键字
+     * @param contentOption 搜索选项
+     * @param pagesIndex 搜索页索引
+     * @return 返回搜索内容消息
+     * @throws IOException 当搜索发生异常时抛出
+     */
     @Command
     public static String search(@Argument(name = "content") String content,
                                 @Argument(name = "type", force = false) String type,
@@ -438,7 +468,7 @@ public class BotCommandProcess {
         }
     }
 
-    @Command(commandName = "artwork")
+    @Command(commandName = "link")
     public static String artworksLink(@Argument(name = "id") int illustId) {
         try {
             if (isNoSafe(illustId, globalProp, false)) {
diff --git a/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java b/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java
index bb3f65d..337e2b6 100644
--- a/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java
+++ b/src/main/java/net/lamgc/cgj/bot/RandomIntervalSendTimer.java
@@ -4,6 +4,8 @@ import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
 import java.lang.reflect.Field;
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
 import java.util.*;
 import java.util.concurrent.atomic.AtomicBoolean;
 
@@ -89,6 +91,8 @@ public class RandomIntervalSendTimer extends TimerTask {
         start(this.loop.get());
     }
 
+    private final static DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-ss HH:mm:ss");
+
     /**
      * 启动定时器
      * @param loop 是否循环, 如果为true, 则任务完成后会自动调用start方法继续循环, 直到被调用{@code #}或总定时器被销毁;
@@ -96,7 +100,9 @@ public class RandomIntervalSendTimer extends TimerTask {
     public void start(boolean loop) {
         this.loop.set(loop);
         long nextDelay = time + timeRandom.nextInt(floatTime);
-        log.info("定时器 {} 下一延迟: {}ms ({}min)", Integer.toHexString(this.hashCode()), nextDelay, nextDelay / 1000F / 60F);
+        Date nextDate = new Date();
+        nextDate.setTime(nextDate.getTime() + nextDelay);
+        log.info("定时器 {} 下一延迟: {}ms ({})", Integer.toHexString(this.hashCode()), nextDelay, dateFormat.format(nextDate));
         if(start.get()) {
             try {
                 Field state = this.getClass().getSuperclass().getDeclaredField("state");
diff --git a/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java b/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java
index fe1fd15..d5cb0fa 100644
--- a/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java
+++ b/src/main/java/net/lamgc/cgj/bot/event/MessageEvent.java
@@ -56,7 +56,7 @@ public abstract class MessageEvent implements EventObject, MessageSender {
 
     @Override
     public String toString() {
-        return "MessageEvent{" +
+        return this.getClass().getSimpleName() + "{" +
                 "fromGroup=" + getFromGroup() +
                 ", fromQQ=" + getFromQQ() +
                 ", message='" + getMessage() + '\'' +