Abstract: In order to explore the laws of multi-seam mining subsidence dynamic prediction, through the analysis of mining subsidence dynamic prediction theory, based on Knothe time function, we design time influence function c algorithm, and develop mining subsidence dynamic prediction software to estimate mining subsidence of first coal mining area in Jiyang Coal Mine. We use this prediction software to carry out subsidence dynamic prediction. The comparison accuracy between expected results and the actual results is receivable, which confirms the practicality and reliability of the established Knothe time function evaluation parameter model.