Automatic control heater

The utility model discloses an automatic control heater, and specifically relates to the heater technical field, the automatic control heater comprises a housing, two mounting plates are arranged in the housing, two U-shaped heating pipes are arranged on the surfaces of the mounting plates, a mounting box is arranged on the inner wall of the housing at one side of the U-shaped heating pipes, a plurality of connecting cylinders are arranged in the mounting box, and the connecting cylinders are connected with the U-shaped heating pipes. Connecting wires are arranged at one ends of the connecting cylinders, external connecting wires are arranged at one ends of the connecting wires, and a constant-temperature controller is arranged at the top of the inner cavity of the shell. The first semicircular sleeve and the second semicircular sleeve are matched with each other, so that the U-shaped heating pipe can be protected, scale on the outer portion of the U-shaped heating pipe can be reduced, meanwhile, a user can c