Individual household exit flue for kitchen

The utility model relates to an individual household smoke discharging flue for kitchens, which is characterized in that the utility model comprises individual smoke discharging pipes of which each layer is led to a building top, an upper negative pressing plate arranged on the building top and a lower negative pressing plate, wherein, the smoke discharging pipes are arranged in a vertical pipe type; the upper negative pressing plate is made with a gradient of 12DEG-20DEG; the distance between the upper negative pressing plate and the lower negative pressing plate is 150-300MM. The utility model uses an individual system for each family and a joint point adopts a gluing insertion type. Besides, a seam is tight. The building top is provided with a negative pressure device. Thereby, discharge flues can be ensured to form negative pressure at any weather. The utility model has the advantages of easy smoke discharging, low construction and installation cost, small sectional area and use space saving of a kitchen. Besides, the utility model can not make odour mutually taint between an upstairs and a downstairs.