The invention discloses a mirror movement neuromodulation system, which comprises a plurality of lead biological signal amplifiers, a microcomputer controller, a plurality of lead functional electric stimulators and a micro-current direct-current constant-current stimulator. The principle that functional electric stimulation and transcranial direct-current electric stimulation techniques and mirror movement neurons participate in movement control is applied comprehensively, the biological signal amplifiers, the functional electric stimulators for simulating integrated electromyography envelope signal control, and the micro-current direct-current constant-current stimulator are integrated through the microcomputer controller, myoelectric activity envelope signals are generated by processing myoelectric signals of a plurality of muscle groups which move functionally by using an uninjured side limb, and the plurality of functional electric stimulators are modulated and controlled, so that the same mirror action is generated by the plurality of muscle groups of an injured limb on an opposite side according to uninjured side myoelectric information, brain functional regulation and reconstruction are realized, the plasticity of neuronal synapsis and the recovery of neurological functions are facilitated, and the treatment effect of sports rehabilitation is achieved.