The present invention provides a platform air-drop buffer system. The platform air-drop buffer system comprises a platform, a bottom plate, a buffer air bag and a connecting mechanism. The buffer airbag is placed between the platform and the bottom plate, the upper part of the buffer air bag is connected with the platform, the lower portion of the buffer air bag is connected with the bottom plate, and the platform and the bottom plate are fixed through the connecting mechanism at the periphery. The bottom plate is a whole plate, the bottom plate is uniformly divided into the same areas, longholes are arranged on the frame around each area, the middle portion of each area is provided with an inlet hole for inflating the buffer air bag, the long holes are used for fixing the lower portionof the buffer air bag, and the upper portion of the buffer air bag is connected with the platform; the connecting mechanism is locked by the end head of a pull pin steel wire rope, when external forceacts on the pull pin steel wire rope, the end head of the pull pin steel wire rope is pulled out from the connecting mechanism, the connecting mechanism is unlocked, the buffer air bag releases the restraint, and inflating is rapidly and smoothly performed through the inlet hole to achieve buffer. The platform air-drop buffer system solves the problems of connection and installation of the bufferair bag and the platform during the platform air-drop and the rapid and smooth releasing in the air-drop process and ensures the whole coordination linkage between the air bags.