Knee joint effusion can be treated by acupuncture, external application of traditional Chinese medicine and internal administration of traditional Chinese medicine. 1. Acupuncture: This method can promote the unblocking of meridians and improve blood circulation and promote the absorption of knee joint effusion, thus achieving the purpose of treatment. 2. Topical application of traditional Chinese medicine: A common method is to apply ointment made of traditional Chinese medicine to the joints in order to promote blood circulation, improve and promote the absorption of fluid, while traditional Chinese medicine fumigation, traditional Chinese medicine hot compresses, etc. can also be useful in the treatment of knee joint effusion. 3. Internal Chinese medicine: Chinese medicine practitioners will use herbs such as peach kernel, angelica, safflower and chuanxiong to treat knee joint effusion based on clinical experience and the patient’s condition. Taking Chinese medicine internally can help to activate blood circulation and remove blood stasis (promoting blood circulation and eliminating blood stasis in the body), and quickly reduce swelling, which is effective in treating knee joint effusion. Seek prompt medical attention for physical discomfort and treatment under the guidance of a Chinese medicine practitioner, and avoid self-medication.