when you black a mean message on discord can that get him ban from discord

No — blocking someone on Discord does not get them banned from Discord. Blocking just hides their messages from you and stops them from DMing or interacting with you in certain ways.

What blocking does

• Removes them from your friends list if they were added.
• Hides their messages in shared servers.
• Stops them from DMing you or pinging you directly.

What it does not do

• It does not ban them from Discord.
• It does not report them automatically.
• It does not remove them from servers you both share.

How someone actually gets banned

A Discord ban usually happens if:

• A server moderator bans them from that server.
• Discord itself takes action for rule violations after a report or enforcement review.

If the message is mean, the better move is to block them and report the message/user inside Discord.