A portable electronic device includes a first body, a second body, a motion assembly, a connector, and an ejector. The second body has a hollow portion, and the first body is movable disposed on the second body to cover the hollow portion. The motion assembly is disposed between the first body and the second body, so that the first body is able to move relatively to the second body. The connector is movably disposed in the hollow portion. The ejector is disposed between the connector and the second body. When the first body moves relatively to the second body to expose the hollow portion of the second body, the ejector is capable of driving the connector to move out of the hollow portion.