The invention provides a random energy compensation based communication method of a wireless network sensor. The method comprises the steps of creating and updating a route list in which the sensor node energy information are stored; selecting a data transmission path according to the route list; accessing an access layer of the communication network so as to finish data transmission. With the adoption of the method, the message transmission delay is further reduced on the premise that the node energy is ensured, and therefore, the accumulated transmission delay in the network can be effectively reduced; in addition, the hop count in network transmission can be reduced; the total energy of the network nodes can be effectively utilized as the hop count decrease while each node energy is balanced.