Vinegar Yanhuo is a Chinese herbal medicine, its efficacy and function is mainly to invigorate blood, move Qi and relieve pain. Generally speaking, it is often used for chest paralysis and heart pain, stomach pain, liver depression and qi stagnation, as well as dysmenorrhea and dysmenorrhea, etc. The pain-relieving effect is relatively strong. Yanhuosuo is a Chinese herb that can be made with vinegar to enhance its pain-relieving effect, so it is called vinegar Yanhuosuo. It can also be made into some compound preparations, such as compound Yanhuosuo spray, with the addition of Scutellaria baicalensis, cloves, and American ginseng, etc., mainly for nourishing Yin and clearing heat, dispelling wind and relieving pain. It should be said that all these drugs need to be used under the guidance of Chinese medicine practitioners and herbalists to identify the disease, do not use or purchase the drugs blindly by yourself.