The main measures for rapid rehabilitation of patellar tendonitis are as follows: first, external fixation of the knee cast or brace to keep the knee joint straight and relaxed, which allows the patellar tendon to be in a relaxed state after fixation. If you continue to move without fixation, it will lead to further stimulation of the position, leading to further inflammation. Secondly, it is important to keep warm and avoid getting cold, because getting cold will lead to a gradual accumulation of local inflammatory metabolites, leading to a gradual aggravation of symptoms. If you can use a warm water bag hot compress, through hot compresses to increase blood circulation and promote the absorption of inflammatory metabolites. Third, to take oral non-steroidal anti-inflammatory and analgesic drugs, such as loxoprofen sodium, diclofenac sodium, to relieve the local inflammatory situation, reduce inflammatory edema and pain. Fourthly, we should take oral Chinese medicine to activate blood circulation and eliminate blood stasis, reduce swelling and pain, such as blood circulation and pain capsules and Dazhiri capsules, which can increase local blood circulation, promote the metabolism of inflammatory metabolites and reduce symptoms. Generally, after the cast or brace is fixed for about 7-10 days and the inflammation gradually subsides, you can perform functional exercises of knee flexion and extension after removing the fixation, and pay attention to the gradual process of exercise, gradually increasing the range of activities, activity time and activity strength, and the symptoms will be gradually eliminated after 3-4 weeks.