Intraosseous fluid is also known as osteoarthritic fluid, also known as joint cavity fluid. Patients with intraosseous fluid should try different treatments depending on the amount of fluid. For example, in patients with a large amount of fluid, joint movement will be significantly restricted, and the joint cavity can be punctured according to the doctor’s instructions to aspirate the fluid, and then pressurized with a bandage, which will eliminate the fluid, and, at the same time, prevent the fluid from increasing. A relatively small dose of hormone can also be injected into the joint cavity so that the fluid in the joint can be quickly absorbed and reduced. For patients with less serious degree of effusion, local physical therapy, such as microwave physiotherapy or far-infrared ray physiotherapy can be carried out. It is recommended that patients take synovitis tablets orally for the treatment of joint cavity effusion, and at the same time, the cause of the disease can be identified, to determine whether it is due to a specific disease leading to the joint cavity effusion, such as rheumatoid, gout and so on, and if it is, it is necessary to carry out the treatment of the primary disease.