A smart wearable breast pumping machine comprising: a suction part attached to a user's breast; a breast pump, for applying a breast pumping pressure to the suction part; a connector connected to the suction part to introduce breast milk pumped by means of the breast pumping pressure and coupled to a breast milk container; a controller for controlling operations of the breast pump, by means of control commands; and a breast pumping part coupled to the suction part to accommodate the connector the breast pump, adapted to apply the breast pumping pressure to the suction part and the controller adapted to control operations of the breast pump by means of control commands, the breast pumping part further comprises a communication module adapted to transmit breast pumping information of the breast milk and operation information of the breast pump, to a user terminal and to receive the control commands from the user terminal, a cover part coupled to the suction part to accommodate the breast pump,, the connector and the controller therein, characterized in that it further comprises a backflow prevention part disposed on the connector to prevent foreign matters from flowing back by means of the breast pumping pressure applied to the connector from the breast pump, (230, wherein the backflow prevention part comprises: a case extended from the connector in such a manner as to be formed unitarily with the connector; a cap extended from the cover part in such a manner as to be formed unitarily with the cover part, coupled to the case, and coupled to an air hose connected to the breast pump,; an elastic member, disposed in an interior formed by coupling the case and the cap to each other in such a manner as to be elastically deformed by means of the breast pumping pressure applied from the breast pump, through the air hose. a suction part attached to a user's breast; a breast pump, for applying a breast pumping pressure to the suction part; a connector connected to the suction part to introduce breast milk pumped by means of the breast pumping pressure and coupled to a breast milk container; a controller for controlling operations of the breast pump, by means of control commands; and a breast pumping part coupled to the suction part to accommodate the connector the breast pump, adapted to apply the breast pumping pressure to the suction part and the controller adapted to control operations of the breast pump by means of control commands, the breast pumping part further comprises a communication module adapted to transmit breast pumping information of the breast milk and operation information of the breast pump, to a user terminal and to receive the control commands from the user terminal, a cover part coupled to the suction part to accommodate the breast pump,, the connector and the controller therein, characterized in that it further comprises a backflow prevention part disposed on the connector to prevent foreign matters from flowing back by means of the breast pumping pressure applied to the connector from the breast pump, (230, wherein the backflow prevention part comprises: a case extended from the connector in such a manner as to be formed unitarily with the connector; a cap extended from the cover part in such a manner as to be formed unitarily with the cover part, coupled to the case, and coupled to an air hose connected to the breast pump,; an elastic member, disposed in an interior formed by coupling the case and the cap to each other in such a manner as to be elastically deformed by means of the breast pumping pressure applied from the breast pump, through the air hose. a case extended from the connector in such a manner as to be formed unitarily with the connector; a cap extended from the cover part in such a manner as to be formed unitarily with the cover part, coupled to the case, and coupled to an air hose connected to the breast pump,; an elastic member, disposed in an interior formed by coupling the case and the cap to each other in such a manner as to be elastically deformed by means of the breast pumping pressure applied from the breast pump, through the air hose.