Electric heating fan based on single-chip control

The invention discloses an electric heating fan based on single-chip control. The electric heating fan based on single-chip control comprises a base, a control panel, a liquid crystal display screen, a support rod, a fan head, a temperature sensor, a pyroelectric infrared sensor, a single-chip, a safety resistor, a positive temperature coefficient thermistor and a lead; the lower end of the support rod is fixed on the base; the control panel and the fan head are fixed on the support rod; the liquid crystal display screen, the temperature sensor, the single-chip and the pyroelectric infrared sensor are arranged on the control panel; and a heating part of the fan head is connected with the single-chip through the lead by the positive temperature coefficient thermistor and the safety resistor. When no person is in a room, the electric heating fan can be automatically closed; and when an indoor temperature is higher, heat generated by the positive temperature coefficient thermistor is gradually reduced, the power