Numbness of the thumbs of the feet after surgery for lumbar disc herniation is considered to be caused by nerve irritation, which can be treated by using medicines such as dehydrating agents and nutrients; if it is caused by poor blood circulation, it can be relieved by infrared physiotherapy, heat therapy and other physical treatments. 1. Nerve irritation: For numbness of the bunion caused by nerve irritation and edema of the nerve, it is recommended to take oral dehydrating agents, such as mannitol. Nutritional nerve medication, such as methylcobalamin and vitamin B6, can be combined. 2. Poor blood circulation: poor blood circulation, easy to thumb numbness, you can relieve the symptoms through heat therapy or ultraviolet physical therapy, etc., blood circulation can effectively relieve the symptoms after normalization. Regarding the numbness of the thumb of the foot caused by lumbar disc herniation after surgery, it can be dealt with according to the above ways, and if the effect is not good, it is necessary to consult a doctor immediately.