Abstract: In this paper, the structure of LogP model is introduced, the time of network delay is more than processor, such as delay speeding, interface cost, the cost of TCP protocol, the time of message passing,the effects of is bigger than processor about parallel efficiency based on LogP in light load. As the results, it is more signification in order to reduce communication delay and improve parallel efficiency that choose highness rapidity's communications equipment than choose processor of high speed in network parallel environment.