Abstract: Distributed robotic system consists of a multirobot system that need to collabor ate in changable ane dynamic environment.thus, it’s a crucial issue how to deal with sharing the communication resources. In this paper,we introduce a general s trategy based on CSMA/CD and communication protocol, which is designed for use in inter-robot environments with unreliable,single-channel and low-communica tion.it’s shown that the communication protocol is effective,efficient robust.