The invention discloses a simulation method of echo of a dynamic scene of a radio detector. In the method, a work scene of the radio detector is constructed by utilizing three-dimensional object modeling software, and the dynamic state or track of each object in the scene is set according to a zero intermediate frequency echo signal simulation method of the radio detector, so that the echo signalsimulation of the radio detector under the condition of a dynamic scene is realized. The simulation method has the characteristics that: the universality is good, a work scene and target with arbitrary complexity can be constructed by utilizing space modeling software, all possible work systems of the detector are comprehensively considered in the zero intermediate frequency echo simulation method of the radio detector, and the dynamic scene echo simulation system of the radio detector is realized by only setting the work frequency, antenna parameters, electric parameters on the surface of a scene object and motion parameters of the detector. Meantime, the simulation method of echo of the dynamic scene provided by the invention has the advantages of small simulation calculation capacity and high execution speed.