A surface electromyography detection device applied to a spinal column restitution system is provided; the spinal column restitution system can treat muscle slight contractures and muscular tension caused by people bad life habits and diseases in modern life; muscular tension mostly occurs on adhering or association muscle groups on two sides of the spinal column, and spinal column fatigue, overloading and deformation can be formed in long term; in the spinal column rehabilitation field, spinal column traction and fixation and machinery and electric field applications for muscular tension alleviation are considered to be effective curing means; the electromyography detection device provides various treatment means, can effectively combine electric and magnetic treatments, and can realize human body muscular tension related ganglion induced discharge, thus effectively improving various muscle health indexes; in addition, electromyography detection can be combined in real time in the same time so as to realize adaptability adjustment, thus obtaining better treatment effect; in addition, the electromyography detection result can serve as important index so as to guide following patient treatments; the electromyography detection device is time and effective, and concise in design.