The invention provides a civil air defense door with a reinforced concrete structure. The civil air defense door comprises a door frame, a door leaf, sealing parts, a monolever interlock and hinges, wherein adhesive tape grooves used for accommodating the sealing parts are formed in the door frame, and embedded decompression bars are arranged on the door leaf which is hinged to the door frame through the hinges to enable the door leaf to rotate around a vertical shaft of the door frame; the monolever interlock arranged on the door leaf comprises an outer handle and an inner handle, and the outer handle and the inner handle are arranged on the outer side and inner side of the door leaf respectively through a first horizontal rotation mechanism and can rotate around the horizontal axis; a plurality of locks are sequentially arranged on the inner side of the door leaf in the circumferential direction of the door leaf, and each lock rotates around the horizontal axis; a plurality of connecting rods are connected to form a square with one side open, the connecting rods forming the square are arranged on the inner side of the door leaf in an integrally moving mode, one of the connecting rods is in rotary connection with the inner handle, the locks are in rotary connection with the connecting rods correspondingly, and the circumferential direction of the square is consistent with that of the door leaf. The civil air defense door is easy to operate, a sealing rubber strip can be uniformly compressed, and reliable sealing is realized.