The invention relates to protective equipment in the field of civil defense engineering and national defense engineering and discloses a linkage locking anti-rebounding civil defense door utilizing fluid pressure. The linkage locking anti-rebounding civil defense door comprises a door frame, door leaves, fluid pressure systems arranged on the door leaves, and lock heads used for opening and closing. The door leaves and the door frame are connected through hinges; each fluid pressure system comprises a pump, a reversing valve, pipelines and a plurality of double-effect pressure cylinders; the pumps communicate with the reversing valves, and the reversing valves communicate with the double-effect pressure cylinders through pipelines; the lock heads are in matched connection with the double-effect pressure cylinders and comprise lock bodies and sliding lock cylinders; lock boxes matched with the lock cylinders correspondingly are arranged on the door frame; and limiting grooves are formedin the lock cylinders, and limiting blocks in sliding fit with the limiting grooves are arranged on the lock bodies. The fluid pressure system in the linkage locking anti-rebounding civil defense door can keep the stable pressure in a long term, and the pressure is transmitted through fluids, so that operation is easier, linkage is more stable and more reliable, and virtual displacement is avoided; and synchronous linkage arrangement is conducted, and thus synchronization of the multiple lock heads at the time of executing unlocking and locking is better; and therefore, the locking anti-rebounding civil defense door is worth popularizing.