Early exercise is of great significance to the repair of patellar abrasion, and common exercise methods mainly include straight leg raising training. Straight leg elevation training: take a sitting position or supine position, straighten the affected limb, slowly raise it up to the maximum degree, and then slowly lower it back down to the original position. This exercise can effectively promote blood circulation and exercise the knee muscles to help stabilize the patella. Adhering to daily exercise is an important part of the recovery process of patients with patellar abrasion, which can effectively help the recovery of knee joint function. The above exercises should be performed under professional guidance to avoid aggravating patellar abrasion due to improper posture or over-exercise.