A PCB wiring heating type mosquito repellent device, comprising a base and a mosquito repellent box arranged on the base, wherein the mosquito repellent box comprises a PCB heating panel, a fan bracket, a fan, an upper cover, a plurality of heating sheets and an accommodating area for accommodating an electric mosquito repellent mat, wherein the fan bracket is fixedly connected to the base, the fan being arranged on the fan bracket, the PCB heating panel being connected with the heating sheet and the fan, one side of the PCB heating panel being provided with a plurality of heating areas, each heating area corresponding to one of the heating sheets, one side face of the heating sheet being connected with the heating area, the other side face of the heating sheet being connected with the electric mosquito repellent mat, a heating wire being evenly laid in each of the heating areas, the heating wires in adjacent heating areas being connected in parallel and being capable of supplying power and heat independently, each of the heating wires being provided with a resistance adjusting structure for adjusting the length of the heating wire connected into a circuit, so as to adjust the temperature by adjusting the access length of the heating wire, and a temperature sensor being arranged on the other side of the PCB heating panel, wherein an accommodating seat for accommodating the mosquito repellent box is arranged on the base, a power output interface being arranged in the accommodating seat, the power output interface being connected with the rechargeable power supply module, a power input interface being arranged in the mosquito repellent box, and when the mosquito repellent box is placed in the accommodating seat, the power input interface in the mosquito repellent box being connected to the power output interface. the mosquito repellent box comprises a PCB heating panel, a fan bracket, a fan, an upper cover, a plurality of heating sheets and an accommodating area for accommodating an electric mosquito repellent mat, wherein the fan bracket is fixedly connected to the base, the fan being arranged on the fan bracket, the PCB heating panel being connected with the heating sheet and the fan, one side of the PCB heating panel being provided with a plurality of heating areas, each heating area corresponding to one of the heating sheets, one side face of the heating sheet being connected with the heating area, the other side face of the heating sheet being connected with the electric mosquito repellent mat, a heating wire being evenly laid in each of the heating areas, the heating wires in adjacent heating areas being connected in parallel and being capable of supplying power and heat independently, each of the heating wires being provided with a resistance adjusting structure for adjusting the length of the heating wire connected into a circuit, so as to adjust the temperature by adjusting the access length of the heating wire, and a temperature sensor being arranged on the other side of the PCB heating panel, wherein an accommodating seat for accommodating the mosquito repellent box is arranged on the base, a power output interface being arranged in the accommodating seat, the power output interface being connected with the rechargeable power supply module, a power input interface being arranged in the mosquito repellent box, and when the mosquito repellent box is placed in the accommodating seat, the power input interface in the mosquito repellent box being connected to the power output interface.