Hip joint effusion may be caused by infectious effusion, rheumatoid immune system disease or chronic injury, mainly by taking general treatment drugs, treatment, surgical treatment and so on. 1. Infectious effusion: caused by infection in the hip joint, first of all need to carry out anti-infection treatment, oral penicillin V potassium, amoxicillin and other antibiotic drugs, if it causes obvious pain, can also be taken orally celecoxib, meloxicam and other anti-inflammatory and analgesic drugs, and pay attention to bed braking. 2. Rheumatic immune system diseases: for example, ankylosing spondylitis, rheumatoid arthritis, we should reduce the amount of activity, pay attention to rest, and with anti-inflammatory and analgesic drugs, the general effusion can be gradually absorbed, and when the condition is serious, we can take the artificial hip arthroplasty. 3. Chronic injury: pay attention to rest, try to avoid too much activity, when the pain is obvious, you can take anti-inflammatory and analgesic drugs orally, and if necessary, you can take hip joint replacement. Note that the above drugs need to be used under the guidance of a doctor, hip joint effusion should go to the hospital, after the cause is clear, take timely treatment.