Fluid accumulation at the root of the thigh, mainly for a small amount of fluid in the hip joint or synovitis of the hip joint. The main treatment methods are reflected in the following points: First, rest in bed as much as possible and do not have weight-bearing activities of the hip joint, because in the process of weight-bearing, there will be friction on each joint surface of the hip joint, which will accelerate the production of joint effusion, because in order for a small amount of joint effusion to be absorbed, it is necessary for the production of joint effusion to be reduced while the absorption is increased. Second, together with the heat compress and physical therapy around the joint, this can accelerate the blood circulation around the joint and promote the absorption of joint effusion. Third, you can take oral medication such as Mai Zhi Ling to promote venous return, or Tiger Power San to help relieve symptoms by promoting blood circulation and relieving pain. The whole treatment takes about a month to a month and a half, and you must pay attention to the time, do not advance the weight-bearing activities, otherwise it is easy to relapse, and a long period of joint effusion, resulting in increased pressure in the joint cavity, prone to other complications.