In daily life, patients with fluid in leg joints should pay attention to keeping warm, reduce exercise, lose weight appropriately, and timely treatment. 1. Pay attention to keep warm: patients with fluid in the leg joints should pay attention to keep warm in daily life and wear knee pads to effectively relieve pain. Pay special attention to the summer time, do not blow the air conditioner directly to the leg joint position, to avoid the increase of knee fluid. 2. Reduce exercise: patients with knee joint effusion should pay attention to rest, and at the same time need to pay attention to exercise restrictions, avoid strenuous exercise, walking too much. 3. Appropriate weight loss: For overweight patients with knee joint effusion, it is also necessary to pay attention to appropriate dietary control, and it is best to lose weight in order to alleviate the pressure and wear and tear on the joints. 4. Timely treatment: after the knee joint effusion, we should pay attention to the protection of the knee joint, do not exercise strenuously, and consult the doctor in time, and under the guidance of the doctor through physical therapy, puncture drainage, medication and other methods of treatment. Clinically, if the amount of knee joint effusion is small, local physical therapy can be performed on the joint to promote absorption. However, if the amount of fluid is large, puncture of the joint cavity can be chosen under the guidance of the doctor to drain the excess fluid.