A power socket with charging interface is provided, wherein the power socket comprises at least one power hole, at least one charging interface and a holding arm, which holding arm being slidably disposed on the main body of the power socket, and one fixed end of the holding arm and one side of the power socket together constituting a containing slot for accommodating a portable electronic device, in which the holding arm may inwardly or outwardly slide so as to adjust the position of the fixed end. Since the width of the containing slot is adjustable, the power socket is allowable for placement of portable electronic devices of various sizes and specifications.