To provide an outlet including a shutoff function that can shut off electricity at the occurrence of vibration, and can be handled easily.

The outlet including a shutoff function includes a plug cap 11 insertable into an existing outlet 100, a plug reception unit 12 that is energizably connected to the plug cap 11 and connects an external electric device freely, a switch bar 2 that is provided to be freely movable vertically and turns on and off the energization connection between the plug cap 11 and the plug reception unit 12, and a weight 3 arranged at an upper edge of the switch bar 2 to be disengaged from the upper edge when a prescribed vibration occurs. The switch bar 2 is arranged so that the switch bar 2 is positioned downward to turn on the energization connection when the weight 3 is positioned at the upper edge of the switch bar 2, and the switch bar 2 is positioned upward to turn off the energization connection when the weight 3 disengages from the upper edge of the switch bar 2.