A hierarchical WSN (wireless sensor network) remote monitoring system was designed to solve the problems of big investment, high costs, and highly difficult sensor wiring when collecting signal notes were increased for wire communication, particularly in some remote regions where the wire communication cannot be used. However, the sensor nodes of the WSN system have the characteristics of random layout expansion and combination. A greenhouse experiment system was established by applying the routing protocol of the wireless network and energy monitoring technique of the WSN system. Based on the experiments and testing performances of the system, the results show that the system is stable and reliable.