Method and system for informing about multi-user multi-input multi-output capability of terminal

A method and system for informing about Multi-User Multi-Input Multi-Output (MU-MIMO) capability of a terminal are provided in the present invention. Wherein the method includes: the terminal sends a Radio Resource Control (RRC) message to a radio network controller, wherein the RRC message carries the information for indicating the MU-MIMO capability of the terminal; the radio network controller parses the RRC message and obtains the MU-MIMO capability of the terminal; the radio network controller informs a base station of the parsed MU-MIMO capability of the terminal through a user plane. The present invention enables the RNC to bring the MU-MIMO capability of the terminal to a NodeB through the user plane, enables the NodeB to obtain the MU-MIMO capability of the terminal and then to match a plurality of users supporting the MU-MIMO capability, and accomplishes the function for sending a plurality of data streams for a plurality of users at the same time.