Abstract: In order to improve the real-time performance of coal mine monitoring system and according to the characteristics of coal mine safety production,a design scheme of data acquisition is put forward based on DSP and CPLD.Taking TMS320C6713 as the core processor and combined with CPLD,the system can realize the logic and schedule control between DSP and multichannel ADC,and the high speed transimission and real-time processing of data are realized through adopting PCI bus interface controller.The system takes full advantage of the superiority of DSP in the signal processing capabilities and CPLD in simple programming,which has a broad application prospects.