Energy-saving ventilation structure of green building

The utility model discloses an energy-saving ventilation structure of a green building, which relates to the technical field of building ventilation and comprises a ventilation pipe, and a sliding chute is arranged at one end of the ventilation pipe. According to the ventilation pipe fixing device, the insertion plate is inserted into one end of the ventilation pipe, in the insertion process, the insertion plate extrudes the clamping block, the clamping block pushes the fixing disc upwards, the fixing disc extrudes the spring, after the insertion plate is completely inserted into the ventilation pipe, the spring pushes the clamping block downwards, the clamping block is clamped into the insertion plate, and therefore the insertion plate is fixed into the ventilation pipe; the first filter screen is in interference fit with the insertion plate through the extension plate at one end, so that the first filter screen is fixed to one side of the insertion plate, the area of one end of the first filter screen is la