The invention provides a ventilation door double opening type adjusting mechanism. A ventilation door comprises rotating shafts and ventilation door dampers connected with the rotating shafts and rotating randomly; the ventilation door double opening type adjusting mechanism comprises at least two connecting rod assemblies, an equidistant link and a drive device; the connecting rod assemblies arefixedly connected onto the end of the rotating shaft; the equidistant link comprises a first through hole arranged along the first direction and a second through hole along the second direction tilt in the first direction; at least two of the connecting rod assemblies are movably arranged in the first through hole and movably arranged in the second through hole; the drive device is connected withone rotating shaft and drives the same to rotate to enable the connecting rod assemblies to rotate with the rotating shaft to drive the equidistant link to move along the first direction to enable thetwo neighboring ventilation door dampers to rotate oppositely with equal opening angles.