Abstract: An embedded protocol stack is designed for adapting to most of the current wireless sensor network node platform, in which distribution and simplicity of protocol are taken into account. The protocol stack can quickly construct the network systematically, and realize data communication. This protocol stack adopts many ways of routing and network formation，and it will provide network communication interface for application directly. Simulation shows that the new protocol stack can realize hundreds of sensor nodes fast constructing network and multihop communication.

Key words: wireless sensor networks, self-organized communication, protocol stack, embedded system