In multi-user MIMO system based on the SLNR (signal-to-leakage-and-noise) of the pre-coding scheme taking the problems of noise and signal leakage into account, not only improve the system performance but also reduce the complexity of the system. However, the base station is required to service at the same time the number of data streams is not greater than the number of transmit antennas. Therefore, when the number of users is large, the need for the user scheduling. While the user scheduling pre-coding algorithm based on SLNR only need to know the channel information of other users, and reasonable choice of the user, proven, the system can get good performance.