In this paper, the ongoing research progress and the state of the art of the WSN are summarized briefly at first. Then the emphasis is laid on the investigation of its characteristics and applications, the communication protocol architectures in order to unveils the challenges in determining the query routing protocols.This thesis first analysis the investigation of the WSN in the present condition, the framework of the sensor node, the composition and the specially character and application domain of the network , the communication protocol of WSN, so on.Furthermore, the thesis defined the conception of the query, classified the query types, introduce some query technologies at present and the three route protocols drive by query. We analysis and comparative the different query technologies, investigated the local query and the global query strategies in wireless sensor network based on comb needle. For the local discovery query, in this paper, there are two constrained comb needle query is proposed to meet the local query discovery requirements.
