The invention provides a far-infrared food barbecuing oven which can be used for barbecuing such food as sesame seed cakes, skewered meat, vegetables and potatoes. The multifunctional far-infrared food barbecuing oven comprises a thermal insulation box body, a food rotating tool mechanism, an oil and water storage mechanism, a safe closing and opening door, an operation panel, an intelligent electric control system, a far-infrared heating mechanism, a temperature control mechanism, a hot air inner circulation mechanism, a motor transmission mechanism, a smoke outlet and an observation window. Through the operation panel mechanism, the types of barbecued food can be selected and the corresponding food barbecuing time, temperature and heat power parameters can be set; the intelligent electric control system automatically controls the food rotating tool mechanism, the far-infrared heating mechanism, the temperature control mechanism, the hot air inner circulation mechanism, and the motor transmission mechanism. The far-infrared barbecue oven is multifunctional in food barbecuing, is convenient to control when the food is cooked, is clean and hygienic, saves energy and is environmentally-friendly, is safe to operate, prevents workers from being scalded and is high in efficiency.