The invention relates to medicine specifically to medical technology, and concerns electrical gastro-intestinal tract and mucous membrane stimulators. The electrical gastro-intestinal tract stimulator comprises a casing (1) with electrodes and in the form of a medicinal capsule containing a power source (4), a control unit (5) of which M outputs are connected to M electrodes (3), a device (6) for receiving signals from internal organs and/or an external transmitter, to (1-N) outputs of which are connected (1-N) inputs of the control unit (5). The electrical stimulator can contain P additional electrodes (7) provided with a coating of microelements or medicinal preparations and connected to P separate outputs of the control unit (5). The electrical stimulator can also contain a signal transmitter (10) designed to transmit signals from the device (6) for receiving signals from internal organs and/or external transmitter and control unit (5) to an external receiver for medical observation and monitoring. The dimensions of the electrical stimulator are restricted by the requirement that it be capable of being introduced into the gastro-intestinal tract orally or rectally or suitable for vaginal use.