Discord机器人DM系统正常但其他命令失效，求代码排查

错误原因 #

自定义on_message事件时，必须手动调用bot.process_commands(message)才能让命令系统正常工作。你的代码里只在处理dm-system-test频道的特定消息时调用了这个方法，其他场景（比如用户在普通频道发送;info、;quote命令）完全没触发命令处理逻辑，导致这些命令失效。

另外还有两个不影响功能的小问题：

• on_ready里的print("{bot.user.name} is up and runing!")应该改为f-string语法print(f"{bot.user.name} is up and running!")，否则无法正确输出机器人名称，同时runing拼写错误应为running。
• 命令描述里的dose是拼写错误，正确应为does。

修复后的完整代码 #

import discord, os, time, random, string, asyncio, datetime, typing
import config
from discord.ext import commands
from discord import DMChannel

intents = discord.Intents.all()
bot = commands.Bot(command_prefix=';', intents=intents)

@bot.event
async def on_ready():
    await bot.change_presence(activity=discord.Game('Start with ;info !'))
    print(f"{bot.user.name} is up and running!")
    print(f"_________________________________")


#Info command
@bot.command()
async def info(ctx):
    embed = discord.Embed(
        colour=discord.Colour.purple(),
        description="Welcome to Infinity.\n\n**What is Infinity?**\n Infinity is a bot that supports mental health!\n\n**How does it help?**\n Infinity helps by being there to cheer you up, and there will always be a support person there to talk to.\n\n**How does someone talk to you through the bot?**\n The bot uses a DM system where you can DM the bot and it will go to one of our support team members. \n\n **How do I report a bug or someone misusing the bot?**\n You may use our support server to report bugs or users misusing the bot.",
        title="Hello, I am Infinity!"
    )
    embed.set_thumbnail(url="https://cdn.discordapp.com/attachments/1142857962172457102/1142891040781635634/Infinity.png")

    await ctx.reply(embed=embed)


#More commands
@bot.command()
async def quote(ctx):
    embed = discord.Embed(
        colour=discord.Colour.purple(),
        description="You're braver than you believe, and stronger than you seem, and smarter than you think",
        title="Quote of the Day!"
    )
    embed.set_footer(text="20/08/23")

    await ctx.reply(embed=embed)

#DM System
@bot.event
async def on_message(message):
    if message.author == bot.user:
        return
    
    # 处理DM消息转发
    if str(message.channel.type) == "private":
        dm_channel = discord.utils.get(bot.get_all_channels(), name="dm-system-test")
        await dm_channel.send(f"[{message.author.display_name}] {message.content}")
    # 处理客服频道回复用户
    elif str(message.channel) == "dm-system-test" and message.content.startswith("<"):
        member_object = message.mentions[0]
        index = message.content.index(" ")
        mod_message = message.content[index:]
        await member_object.send(f"[{message.author.display_name}] {mod_message}")
    
    # 关键：无论什么消息，都要处理命令（必须放在所有逻辑之后）
    await bot.process_commands(message)


bot.run(config.TOKEN)

核心修改点 #

• 将await bot.process_commands(message)移到on_message事件的最后，确保所有非机器人发送的消息都会触发命令处理。
• 修正了字符串拼接为更简洁的f-string语法。
• 修正了拼写错误（dose→does、runing→running等）。

内容的提问来源于stack exchange，提问作者Morgan