The recovery time for patellar tendonitis is related to the severity of the condition and there are significant individual differences. Patellar tendonitis is a sterile inflammation that occurs after damage to the patellar tendon and manifests as severe pain in the front of the knee joint. The disease is generally treated conservatively with oral or topical non-steroidal anti-inflammatory drugs, such as ibuprofen, celecoxib, and fotarine ointment, as well as oral or topical blood-vitalizing Chinese medicines, such as Panax notoginseng tablets and Yunnan Baiyao aerosol. Local physiotherapy such as hot compresses and moxibustion can help to reduce inflammation and pain, and can significantly shorten the course of the disease. Patients with severe pain need local braking for 2-3 weeks, but there is no exact clinical time point for how long it will take to heal. In the acute phase of patellar tendonitis, knee extension should be avoided as much as possible, and after the symptoms have subsided, appropriate activities can be gradually performed, but strenuous exercise is prohibited. Patellar tendonitis may also be combined with knee injury, patients should go to the orthopedic department for knee CT and other examinations to clarify the diagnosis and receive treatment.