Synovitis of the foot is mainly due to inflammation of the bursa of the ankle joint and some small joints of the foot, which can cause the following symptoms: first, painful sensation, because the inflammation can lead to inflammatory edema and inflammatory exudate can cause irritation of the peripheral nerves, which can lead to significant pain. The second is unfavorable activity, because the pain and inflammatory edema and swelling inside will lead to increased pain when the ankle and foot are moved, and these inflammatory edema and swelling will cause local muscles to be in a state of tension, so unfavorable activity will occur. The following treatment measures are usually taken: 1) elevate the foot above the level of the heart to reduce the inflammatory edema and swelling by gravity; 2) take oral anti-inflammatory and pain-relieving drugs, such as Fotarin enteric capsules and diclofenac sodium to relieve local inflammation and reduce inflammatory edema; 3) perform scalding with Chinese herbal medicines, such as Chuanwu, Xanthium, Chickweed, Gingerbread, Sumac, and Cao Wu. These drugs are effective in activating blood circulation and removing blood stasis, soothing the tendons and warming the meridians and dispersing cold. Generally after the above treatment, and then sufficient rest and avoid excessive activities, in 1-2 weeks time can be significantly improved.