Based on the FPGA platform, a system is designed which captures and filters data packets in the PS of the TDSCDMA core network. And a high speed strategy ，which takes advantage of the Bloom filter and other algorithms，is  proposed to filter data packets with the Hash algorithm , the strategy is implemented with Verilog. Finally,the programme downloaded to the FPGA development board is tested. When the users supervised obey the uniform distribution in a largescale way,it can process the GTP packets in a linear rate and filter the packets of the specified users.