The invention discloses a simple wind field simulation system, and belongs to the technical field of structure power model tests. The simulation system comprises a wind generating system including a fan array, a support system, a lifting system, a rectifying device and a frequency modulating device, and also comprises a control system including a main program control module, a wind speed calibrating module and a wind spectrum parameter setting module, wherein the wind generating system and the control system are electrically connected with a wind speed time interval analog output module. The simulation system is capable of precisely outputting a steady state wind field and a fluctuating wind field in simulation, not only are the enough stability and analog precision provided, but also the good operability is provided. The system can be used for developing an ocean engineering structure wind fatigue damage model test, an offshore wind turbine structure wind load power mode test, and an offshore wind turbine blade aerodynamic force characteristic research. After a complex environment load combination simulation system is constructed in combination with a wave current-seismic simulation system, the simple wind field simulation system can be used for performing the model test researches of fixed and floating type ocean engineering structure under the environment load common effect such as wind, wave, ocean current and seism.