The invention discloses a method for auxiliary evaluation of stress states of knee joints. The method comprises the following steps: obtaining sizes of feet and foot progression angles of the left and the right feet during normal walking of a testee, carrying out standardization on data, then analyzing sole pressure data of the left and the right feet, and obtaining the average pressure difference aPDA-1 of soles of the two feet during the normal walking; obtaining the sizes of the feet and the foot progression angles of the left and the right feet of the testee during unilateral knee rotation walking, carrying out standardization on the data, then analyzing the sole pressure data of the left and the right feet, and obtaining the average pressure difference aPDA-2 of the soles of the two feet during the unilateral knee rotation walking; wherein, the standardization applies MATLAB R2006a software for carrying out treatment, if P is less than 0.05 during the comparison of aPDA-1 with aPDA-2, the situation prompts that the stresses of the left knee joint and the right knee joint of the testee are inconsistent. The application of the method can rapidly and accurately understand the physiological relationship between the feet and the knees under different actions, thereby guiding various types of training or movement.