An exhaustive design to the micro-architecture of SIMD core based on PIM technology is made; meanwhile the system architecture is implemented completely by applying Verilog hardware description language, and is simulated by the simulation software Xilinx ISE, the verification of the functional correctness is obtained as well via the simulation waveform. As the result, it can be concluded that the bandwidth and the delay of data accessing can be increased and reduced respectively by making full use of PIM technology, and then the performance of the entire system can be greatly improved accordingly.