A terminal management method and system, a server and a terminal are described. The terminal management method includes: a server configuring rich text information used for prompting a user for a terminal, the server selecting corresponding rich text information according to identification information of the terminal which is managed at current, adding the corresponding rich text information into a newly added extended field of a notification command of an OMA-DM protocol, and sending the notification command to the terminal such that the terminal prompts the user according to the rich text information.