The invention discloses an electric heater of a guest room, which is applied to an inner room of the guest room and used for lifting environment temperature. The electric heater of the guest room comprises a framework body, a heating element fixed on the framework body and a temperature control element; the temperature control element closes to the heating element, and the heating element is an electric heating pipe; the electric heating pipe is arranged along the length direction of the framework body, radiating thin plates sleeve on the pipe wall of the electric heating pipe and evenly spaced along the length direction of the electric heating pipe; the upper space of the electric heating pipe is provided with a guide flow plate with multiple radiating through holes along the length direction of the electric heating pipe; multiple radiating through holes are evenly spaced and distributed on the guide flow plate, and the lower part of the electric heating pipe is provided with a blower. The electric heater of the guest room improves the radiating rate and shortens the time for making surrounding temperature reach moderate; the electric heater is featured by good stability, fast radiating speed, high safety performance, reasonable structure, and others.