Less lubricating fluid in the knee joint is usually caused by other underlying pathologies, commonly caused by osteophytes, osteoarthritis, or synovial lesions of the knee joint. The main treatment direction can be intra-articular injection of sodium vitrate, or platelet-rich plasma, as well as oral glucosamine, nourishing joint cartilage, etc., to help relieve the corresponding clinical symptoms. At the same time it is important to keep warm, as cold stimulates vasoconstriction around the knee joint, and less synovial fluid is produced. In addition, avoid strenuous exercise, because the area requires more blood and oxygen consumption during strenuous exercise, and the symptoms will be more pronounced if you cannot keep up with the nutrition. In addition, you can do more hot compresses and acupuncture to stimulate treatment, which can also help to produce less synovial fluid.