The invention provides a method for determining five stand tandem cold mill depressing distribution. The method comprises steps of designing rolling strategy
modes and various grading forms which are suitable to a tandem cold mill in accordance with
process requirements of the tandem cold mill and
original data of coils, selecting data of grading forms and
device parameters of the mill of a device capability form in accordance with selected depressing distribution rolling strategy
modes and depressing distribution proportionality coefficients, setting up a depressing distribution calculation model, calculating rolling process parameters by using a rolling process
mathematical model, solving a non-linear equation model through a quasi-Newton method, calculating obtained satisfied depressing distribution, storing the depressing distribution data to a
database, and preparing data for setting a calculation model. According to process properties of the tandem cold mill, the proper rolling strategy
modes are provided, the depressing distribution calculation model is set up, the principle is simple, the implementation is easy and the operation is convenient.