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In traditional wireless sensor networks, the users, the sink nodes and sensor nodes are considered to be static, and networks are organized by the form of single-layer planar, which can not adapt to the application of the sensor nodes with mobility. This article starts from the network architecture, introduces the architecture of traditional wireless sensor network, and takes account of the application scenario of mobile sensor nodes. Then we propose architecture of wireless sensor network with mobile sensor nodes. The architecture is divided into high-end node layer and low-end node layer. The high-end nodes are responsible for the data routing, and the low-end nodes are responsible for sensing and reporting data so that the mobile sensor nodes can be freed from the complicated routing calculation and implementation, and improve the network performance effectively. The simulation results show that the hierarchical mobile wireless sensor network can effectively reduce the energy consumption of sensor nodes and data transmission delay.