The invention discloses an electric fan capable of automatically adjusting temperature according to the indoor temperature. A base is included, and a telescopic rod is connected to the base, and is provided with a machine shell; a display screen is arranged on the machine shell, and a button panel is arranged below the display screen; four LED indicator lamps are arranged beside the button panel;a micro processor is arranged in the machine shell, and is connected with a temperature inductor, a smog inductor, a distance inductor and a Bluetooth transceiver; the Bluetooth transceiver is connected with a voice receiver; the display screen is connected with the micro processor; a direct current variable-frequency brushless machine is fixed to the telescopic rod through an inner hexagon screw,and is arranged in the base; the base is connected with fan blades through an electrodeless damping rotating shaft; a battery box is arranged on the back side of the base, and is connected with the direct current variable-frequency brushless machine; and a lithium ion battery is installed in the battery box. The electric fan capable of automatically adjusting temperature according to the indoor temperature is simple in structural principle, and people can operate the fan as long as people have a mobile phone or a Bluetooth remote controller, or can directly operate the fan in a voice manner,or people can start the fan by standing in front of the fan.