The invention relates to a model modified system based on multi-test state data, which is applied to perform comparison validation to virtuality and reality combination of a product structure parameter by synthesizing a plurality of state mechanical property test data in a structural design process and modify a virtual experiment model, and belongs to the technical field of virtual experiment. The model modified system based on the multi-test state data of the invention can be used for simultaneously modifying the virtual experiment model, virtual experiment results, a practical test model and practical test results under different test conditions by using the corrected parameter of the virtual experiment model and solve the problem that a response parameter is not enough to obtain unique solution of the corrected parameter under single test state.