Traditional photovoltaic power station photovoltaic array generally adopts RS485 bus communication network, there are many disadvantages such as large construction workload, network difficulty, and difficult maintenance.Wifi, Zigbee and 4G are mature wireless communication technologies, which have been applied in the field of photovoltaic power generation.However, there are problems such as complicated technology, low communication rate and high cost respectively.In order to solve these problems, a new bluetooth 5.0 technology is introduced, which has the characteristics of simple implementation, high communication rate and good economy.On the basis of the analysis of the existing bluetooth network, this paper puts forward a PV power station wireless mesh network scheme, gives the detailed specific networking process and feasible routing algorithm.The analysis and calculation demonstrate the scheme has smaller communication time delay, good anti-interference and high safety, provides a new solution for photovoltaic power station network.