An ingredient feeding, cooking and heating system, comprising a cooking cavity formed by a hollow shell in a sealed manner and main cooking equipment arranged in an interior of the cooking cavity, the main cooking equipment comprising a wok device and an ingredient feeding device (2, 7d), a cooking area for accommodating the wok device being arranged at a middle portion of the interior of the cooking cavity, and a feeding area for accommodating the ingredient feeding device (2, 7d) being arranged at an upper portion of the interior of the cooking cavity and positioned above the cooking area; the wok device comprising a wok (1, 20c), a wok lid (12, 23c) for closing or opening the wok (1, 20c), a furnace body device (13, 24c) adapted for bearing and heating the wok, and a wok rotating device (14, 25c) adapted for controlling the wok (1, 20c) to rotate; the ingredient feeding device (2, 7d) being configured to guide in food materials and feeds the food materials into the wok (1, 20c), the furnace body device (13, 24c) being configured to heat the wok (1, 20c) and the wok rotating device (14, 25c) being configured to rotate the wok (1, 20c), thereby achieving cooking processing of the food materials in the wok (1, 20c); characterized in that, the interior of the cooking cavity is further adapted as a cooking fume exhaust gathering space, and cooking fume generated by the wok device in the cooking cavity during cooking is gathered in the cooking cavity; the system further comprises a cooking fume treatment device (3, 3c), a side wall of the shell is provided with a first exhaust port for connecting the cooking fume treatment device (3, 3c), and the cooking fume gathered in the cooking cavity is exhausted to the cooking fume treatment device (3, 3c) from the first exhaust port to be treated; the wok lid (12, 23c) is provided with a smoke outlet corresponding to the first exhaust port; the smoke outlet is communicated with a cooking fume inlet (31, 321c) of the cooking fume treatment device (3, 3c) via a cooking fume pipeline (121, 311c); the cooking fume generated in the cooking process with the wok (1, 20c) being closed is discharged to the cooking fume treatment device (3, 3c) from the smoke outlet to be treated; cooking fume escaping into the cooking cavity is exhausted to the cooking fume treatment device (3, 3c) from the smoke outlet to be treated when the wok (1, 20c) is opened; a side wall or bottom wall of the shell is provided with an exhaust gas return port communicated with a cooking fume outlet (32, 322c) of the cooking fume treatment device (3, 3c), and cooking fume exhausted after being treated by the cooking fume treatment device (3, 3c) enters the cooking cavity from the exhaust gas return port to be subjected to circulating cooking fume treatment so as to achieve zero emission of the cooking fume. characterized in that, the interior of the cooking cavity is further adapted as a cooking fume exhaust gathering space, and cooking fume generated by the wok device in the cooking cavity during cooking is gathered in the cooking cavity; the system further comprises a cooking fume treatment device (3, 3c), a side wall of the shell is provided with a first exhaust port for connecting the cooking fume treatment device (3, 3c), and the cooking fume gathered in the cooking cavity is exhausted to the cooking fume treatment device (3, 3c) from the first exhaust port to be treated; the wok lid (12, 23c) is provided with a smoke outlet corresponding to the first exhaust port; the smoke outlet is communicated with a cooking fume inlet (31, 321c) of the cooking fume treatment device (3, 3c) via a cooking fume pipeline (121, 311c); the cooking fume generated in the cooking process with the wok (1, 20c) being closed is discharged to the cooking fume treatment device (3, 3c) from the smoke outlet to be treated; cooking fume escaping into the cooking cavity is exhausted to the cooking fume treatment device (3, 3c) from the smoke outlet to be treated when the wok (1, 20c) is opened; a side wall or bottom wall of the shell is provided with an exhaust gas return port communicated with a cooking fume outlet (32, 322c) of the cooking fume treatment device (3, 3c), and cooking fume exhausted after being treated by the cooking fume treatment device (3, 3c) enters the cooking cavity from the exhaust gas return port to be subjected to circulating cooking fume treatment so as to achieve zero emission of the cooking fume.