The invention belongs to the technical field of monorail traffic and particularly relates to a suspended sky-train vehicle side escaping evacuation platform system. A suspended sky train comprises a plurality of vertical columns, rail beams erected between the vertical columns and carriages suspended below the rail beams through bogies. An evacuation platform is connected with the vertical columns and/or the rail beams, and supporting force is provided for the evacuation platform through the vertical columns and/or the rail beams. The distances exist between the evacuation platform and the carriages, and the carriages comprise passages for entering of the evacuation platform. According to the suspended sky-train vehicle side escaping evacuation platform system, through arrangement of the evacuation platform and forming of the passages formed in the carriages and used for entering of the evacuation platform, when emergency situations occur in a vehicle, passengers can rapidly enter the evacuation platform through the passages. The evacuation platform can further provide an operation platform for workers, and maintenance of the workers for the vehicle, the vertical columns and rail beams is facilitated; and meanwhile, the evacuation platform is arranged on the vertical columns, the arrangement position of the evacuation platform cannot be affected by the ground environments, and thus good convenience is achieved.