The invention relates to the technical field of product simulation design, in particular to a method for equilibrium assignment of key parameters in industrial products. The method includes the preparation steps of (1) expressing the key parameters in the form of a table; (2) converting the table into a P matrix; (3) expressing each type of characteristic values with a constant column matrix X; (4) making the P matrix multiplied with the X matrix, which is expressed as an M matrix; (5) solving the optimal solution of the M matrix, judging the amount of data of the optimal solution, and executing step (6) or step (7); (6) solving an optimal solution set, solving the standard deviation of the optimal solution set according to the optimal solution set, and taking the optimal solution with the minimum standard deviation in the optimal solution set as a final solution; (7) selecting an optimal scheme through a scatter distribution diagram. The method is mainly used for solving the actual problem of assigning limited resources to different objects and events to obtain expected goals.