The present invention provides an electric breast pump. The electric breast pump includes a conduit module, a suction module and a host. The conduit module includes a connector, a first conduit and a second conduit. The connector has an electric contact and an opening hole, and the connector is further disposed with a protrusion at the side of the connector on which the opening hole is formed. The first end of the first conduit connects to the electric contact. The first end of the second conduit connects to the opening hole. The suction module has an adapter body coupled with the connector to connect the suction module and the conduit module. The host connects to the second end of the first conduit and the second end of the second conduit. The host controls the suction module via the conduit module to extract and collect milk when the suction module contacts mother's breast.
