Portable mobile terminal

The invention discloses a portable mobile terminal comprising a power supply interface, a chargeable battery, a function module, a phone line interface and a voltage conversion circuit, wherein the chargeable battery is used for supplying power for the function module; the power supply interface is used for being connected with a power supply to charge the chargeable battery; the phone line interface is used for being connected with a fixed phone line to lead in the voltage of the fixed phone line; and the voltage conversion circuit is used for converting the voltage of the fixed phone, whichis led in by the phone line interface, into voltage which can be accepted by the chargeable battery when the chargeable battery is charged and charges the chargeable battery, therefore, the portable mobile terminal can be more conveniently charged.