To realize a common and feasible design method for a high speed communication card,this paper introduces the characteristics of the CompactPCI bus and describes the relations of bus latency and communication bandwidth simply.A kind of hardware architecture based on dual-port RAM is proposed to isolate different agreements and different frequency buses of the PCI bus and the local bus.By using this method,the hardware design and drive programming are simplified greatly,and the interface chip and the drive chip are integrated to be modules for the development of function cards.At the same time,a experimental card is produced to test the feasibility of the method,and obtained optimal communication bandwidth by the experimental card is 117.97 MB/s at different communication modes.Experimental results show that the communication bandwidth of the experimental communication card meets the requirements of high speed and the method is easy to realize.