Abstract: In order to solve the problems of WSN communication nodes in smart agriculture such as high energy consumption, high cost and node disconnection, an optimal deployment strategy of WSN communication nodes in smart agriculture in 5G environment was proposed. Field experiments show that this strategy is effective, which not only improves the optimization speed and reduces the energy consumption of sensor communication network, but also further improves the life cycle of network nodes on the premise of ensuring the full connectivity of field WSN communication network nodes.