Rheumatoid arthritis of the knee may be a joint inflammatory response disease caused by group A beta-hemolytic streptococcus, which can be treated by general treatment and medication under the guidance of a doctor. 1. General treatment: patients need to pay attention to keep warm, avoid moisture and cold, rheumatoid arthritis can be bed rest during the active period, after the condition improves, to control the amount of activity, but also to eat easily digestible and nutritious food. 2. Drug treatment: patients can be treated with drugs under the guidance of doctors, commonly used drugs are erythromycin, erythromycin, etc. Glucocorticosteroids can also be used for treatment, commonly used drugs are prednisone, dexamethasone, hydrocortisone, etc. Knee rheumatoid arthritis patients are advised to go to the regular hospital in a timely manner, under the guidance of the doctor to standardize the treatment, the medication should be used in accordance with the doctor’s instructions, do not self-medication.