Dual-fuel low-nitrogen gas hot blast stove

The utility model relates to a dual-fuel low-nitrogen gas hot blast stove which comprises a stove body, a first burner is arranged at one end of the stove body, a smoke outlet is formed in the other end of the stove body, a gas inlet pipe is arranged at the outer end of the first burner and connected with a natural gas source, and a second burner is arranged on the side wall of the stove body and connected to a blast furnace gas source. A temperature detection sensor is arranged at the position, located at the front end of the smoke outlet, of the tail of the furnace body, an air supplementing opening is formed in the tail of the furnace body, and a dilution fan is installed at the air supplementing opening and used for supplementing cooling air into the smoke at the outlet so as to reduce the temperature of the smoke at the outlet and the temperature of the hearth. The temperature detection sensor is in signal connection with the dilution fan so as to control the dilution fan to be automatically started; acc