The invention discloses a plug-in mobile phone mobile power supply. A charge hole of a mobile phone is plugged into a plug; the plug is driven by the mobile phone to move downwards in parallel until the back face of the mobile phone is attached to the mobile power supply; the power supply is characterized in that two sliding shafts are vertically arranged in a mobile power supply rear seat, wherein the plug can slide up and down on the sliding shafts; a charge control device is connected with the plug, a socket, a solar panel and an electrical storage device. The mobile power supply has the advantage that the defect that the existing mobile phone and the mobile power supply are required to be charged independently is changed to achieve the function of integrally combining the mobile phone and the mobile power supply.