By using finite element analysis software, the radial magnetic field of permanent magnet generator is simulated, and the main structure of generator is designed, including: vibration pick-up device, frame, winding coil. 应用有限元分析软件对所设计的径向磁化的永磁振动发电机的磁场进行仿真分析,根据分析结果优化设计了发电机的主要结构,包括:拾振装置、骨架、绕组线圈。