The invention discloses a ventilation door and an air conditioner with the ventilation door. The ventilation door comprises a first rotating shaft, a second rotating shaft and a baffle, wherein the first rotating shaft and the second rotating shaft are oppositely arranged; two ends of the baffle are respectively connected with the first rotating shaft and the second rotating shaft; the first rotating shaft and the second rotating shaft are capable of winding the baffle; at least one vent hole is formed in the baffle; and the vent hole is capable of moving between the first rotating shaft and the second rotating shaft along with the baffle. According to the ventilation door and the air conditioner with the ventilation door, the air quantity entering proportion is adjustable in real time, and the air quantity distribution can be accurately controlled; the sealing effect is good, and energy can be utilized with maximum efficiency; and the structure is simple, and compact arrangement of abox body is facilitated.