Osteoarthritis is more painful at night than during the day, considering too much activity during the day, or cold joints. 1. Excessive daytime activities: due to excessive daytime activities, it will cause joint strain, increased inflammatory exudation, when resting at night, resting pain, there may be obvious pain, and even swelling of the joints, and if it happens again and again, it will aggravate the degeneration of the joints, and there will be deformation of the joints. 2. Cold joints: as the temperature drops at night, if you don’t pay attention to local warmth, resulting in cold knee joints, poor local blood circulation, causing inflammatory irritation symptoms, may also appear as symptoms of knee pain aggravation. Osteoarthritis is more painful at night than during the day. If the symptoms persist or recur, it is recommended that the patient consult a hospital in time to clarify the cause of the disease and then carry out standardized treatment, so as not to delay the condition.