The invention discloses an jet heating system and a control method thereof. The system comprises a heating section, a preheating section, a smoke discharging section and a control section; and the heating section, the preheating section and the smoke discharging section are sequentially connected, and the control section is connected with the preheating section, and is used for receiving and analyzing relevant signals of the preheating section, calculating the relevant signals and controlling the working mode of the preheating section. According to the system and the control method, smoke discharging of a radiant pipe can be effectively controlled, the residual heat energy of the combustion waste gas of the radiant pipe can also be sufficiently utilized, and moreover, the investment of electric energy of a circulating fan can be effectively reduced.