The utility model relates to an electric heating smoke killing insects machine, which is provided with a medicine barrel and an electric heating device which is provided with a heating device. A physic liquor spraying system is arranged on the medicine barrel. The heating device is conducted with a power supply through a power supply plug on a conducting wire, and the conducting wire is provided with a switch. A medicine conveying pipe of a physic liquor injection system is provided with a one-way valve to prevent reflux. The electric heating smoke killing insects machine causes the physic liquor to be sprayed into smoke, the residence time of the physic liquor smoke in the air is prolonged, and the smoke can be diffused at a very small corner, causing drug effect to be played sufficiently. The effects of sterilization and deinsectization are improved.