The invention discloses a rolling force coefficient limiting value specification control method. The method comprises the following steps that 1, a specification control mode is adopted for rolling force coefficient limiting values; 2, an initial value of each rolling force coefficient limiting value is determined, wherein according to the steel hardness degree, produced strip steel is divided into three types which are the hardness soft type, the hardness moderate type and the hardness hard type, three rolling force coefficient limiting values are given as initial values, then, according to the actual production condition and the actual need of specifications, rolling force is optimally adjusted, and the amplitude of every adjustment ranges from 0.01 to 0.05. Compared with the prior art,the rolling force coefficient limiting value specification control method has the advantages that the rolling force coefficient changing range is enlarged, and the rolling force calculation precisionis improved; compared with existing steel specifications with the rolling force coefficient reaches the limiting value, the rolling force calculation precision is greatly improved, thickness control is improved, and the problem that the thickness is very poor is solved.