The utility model discloses a combined harvester. The combined harvester disclosed by the utility model has the advantages that under a good ventilation state of an exhaust pipe which is not blocked in a midway, even though dust, water and the like can be prevented from intruding, the internal space of a fuel tank is enabled to be communicated with external air. The combined harvester is provided with supporting frameworks (140), the fuel tank (170) and the exhaust pipe (183), wherein the supporting frameworks (140) are used for supporting a grain storage funnel (94), the supporting frameworks (140) are formed by cylindrical components, and the internal space of the supporting frameworks (140) is outwards opened; the fuel tank (170) is located near the supporting frameworks (140) when looking down; the exhaust pipe (183) is formed by a flexible material, the exhaust pipe (183) is communicated with the internal space of the fuel tank (170), and the exhaust pipe (183) stretches upwards from a connecting part between the exhaust pipe (183) and the fuel tank (170); the upper end part of the exhaust pipe (183) is connected with connected parts (188) which are formed on the supporting frameworks (140) in a form that the upper end part of the exhaust pipe (183) is communicated with the internal space.