If you have an itchy knee joint, you should determine if it is a chronic inflammation of the knee joint. First, go to a regular hospital for an examination and ask your doctor to determine if the itchy knee is caused by inflammation. If it is determined that the inflammation of the knee joint is the cause of the local symptoms, you can take oral horse chestnut seed extract tablets to promote the absorption of the local inflammation, along with glucosamine sulfate and chondroitin sulfate. If there is no significant local swelling, local physiotherapy such as electromagnetic therapy and Chinese herbal medicine ionization can be used to promote the absorption of inflammation. If there is significant local swelling, appropriate cold compresses and external fixation of the knee joint should be applied to increase the pressure on the knee joint to gradually relieve the local swelling and itching.