Degenerative arthritis of the knee is a common disease in the elderly, which affects the quality of life of most people in their later years and is a medical problem today. As we age, the body’s functions continue to deteriorate and problems arise in various parts of the body and organs, including the joints. There are more treatments for this type of disease, both conservative and surgical. Domestic patients do not tend to prefer conservative treatment, but often miss the best time for surgery and pay a heavy price. Patients with degenerative knee arthritis first need to clarify the degree of joint lesions, such as patients with definite free bodies, bone spurs, synovial entrapment syndrome, etc., can first consider arthroscopic surgery, otherwise conservative treatment often leads to accelerated joint degeneration; if the joint gap is good, conservative treatment can be actively carried out, such as physical therapy, medication, external cleaning methods; if the joint cartilage damage is serious, joint deformity and restrictions are obvious. If the joint cartilage damage is serious and the joint deformity and limitation are obvious, joint replacement is needed to restore the joint function to improve the quality of life. Most of the patients in China should change their previous understanding that conservative and surgical treatment must be chosen according to the degree of joint joints, rather than blindly believing in a particular statement, in order to improve the quality of life.