A method, a terminal, an apparatus, and a system for device management (DM) are provided. Specifically, a DM terminal, a DM apparatus, method for managing the terminal device are provided. The method for managing the terminal device includes the following steps: adding, by a DM terminal device, management nodes in a DM tree of the DM terminal device; and recording, by the DM terminal device, MOs types supported by the DM terminal device in the management nodes added in the DM tree of the DM terminal device. Therefore, the problem that the server does not know the DM applications supported by the terminal, and in the method, a specific management operation is delivered to make the management of the server more flexible and effective.