The invention provides a probability type wireless sensor network routing method based on energy harvesting. The method comprises network initialization, round cluster process, node maintenance and exception handling. In the round cluster stage, an algorithm takes energy efficiency into consideration while introducing energy harvesting factors, so that a node with high energy harvesting speed and residual energy is likely to be elected as a cluster head; and a novel probability type routing algorithm is adopted to perform data transmission among clusters in the routing process of the cluster head. Different from the traditional clustering routing which reduces energy consumption to the greatest extent, the method aims to increase the utilization ratio of the harvested energy the greatest extent and introduce novel probability type routing in the cluster head data transmission process, so that the energy harvested by the node can be effectively utilized, the energy consumption of the cluster head node is balanced, the phenomenon that the cluster head node near the converging node is converted into a sleeping state untimely due to high energy consumption is avoided, the work time of the node in the network is prolonged, and the whole performance of the system is improved.