The utility model discloses a hardware platform of a movable power supply trolley transformer chamber ventilation unit, comprising fans FM1 and FM2, more than one shutter, and a transformer temperature control box; shutters are meanwhile arranged on left and right sides of a transformer chamber; the control power supply of the shutters has two sources, wherein one is a power supply sharing with the fans, and when the fans need starting, the shutters are opened in advance; and the other is a power supply provided through a bipolar micro switch in a PT cabinet and individually controlling opening and closing of the shutters, and meanwhile a shutter control loop can be controlled individually, and realize natural ventilation under the condition of not using the fans; the fan FM2 is arranged at the shutter on the right side and close to the head front portion of a power supply trolley. The movable power supply trolley transformer chamber ventilation unit is provided with the fan and the transformer chamber shutters, and cooperates with a control system to manually or automatically control motions of the two fans and the shutters so as to adjust temperatures of the transformer chamber.