Collateral bloodletting is a traditional Chinese medicine(TCM)therapy which is used in a variety of diseases.The well point is the first of five transport points, which is located at the distal end of extremities.The sense of needling is strong there which is easy to stimulate meridian qi.Collateral bloodletting at well points plays a certain role in the first aid of stroke with disturbance of consciousness, which has been widely used in ancient and modern times, and its curative effect is certain.The treatment of stroke with disturbance of consciousness by collateral bloodletting at well points is based on a certain theoretical foundation of TCM and has produced a series of therapeutic effects.From the perspective of modern medicine, there is a close relationship between fingertips and the brain.Fingertip bloodletting can improve brain metabolism and protect brain tissue through various mechanisms.Collateral bloodletting at well points is simple and effective.It is worthy of further research, popularization and application in the treatment of stroke with disturbance of consciousness.