Fire needling may have sequelae, such as scarring, infection, nerve damage and bleeding. 1. Scarring: some patients are scarred, leaving obvious traces of needle eyes on the skin after the needling, which will become more and more obvious as time goes by. 2. Infection: the needling must be carried out in a sterile environment, otherwise the eye of the needle will be infected, and the patient can scratch the eye of the needle can also be infected. 3. Nerve damage: Before sticking the needle, we must clarify the location of the nerves under the skin, and avoid the nerves when sticking, so as to avoid sticking to the nerves and causing other diseases. 4. Bleeding: if you accidentally hit a large blood vessel when sticking a fire needle, there will be blood flow, if not treated, there will be excessive bleeding, and even life-threatening. Fire needle is not suitable for all diseases, not blind treatment with a fire needle, such as after the fire needle feel unwell, please consult a doctor in time.