The TCM diagnosis of soft tissue injury includes: 1, the sprained area often has pain, unfavorable joint movement or inability to move, followed by swelling, and the injury site may appear red or bruised. When the skin is red, it is generally diagnosed as tendon injury; if the skin is purple, it can be diagnosed as stagnant blood stasis; 2, if the wound is painful, swollen, and inability to move, it can be diagnosed as stagnant Qi and blood evidence; 3, when there is a recurrence of weather changes, it is generally stagnant blood obstruction evidence due to cold and damp invasion; 4, according to the meridians of the sprain site, it can be diagnosed as meridian sprain, such as foot Taiyin meridian sprain.