The invention discloses a suspended mold which is applied to a slab reserved hole. The suspended mold comprises a left mold, a right mold and a supplement mold, the left mold and the right mold are provided with tegular fixed plates and support plates, the tegular fixed plates of the left mold and the right mold are hinged together on one end face, part of the support plats are cut, and when the supplement molds and the support plates are combined together, a whole circle can be formed; the tegular fixed plates are fixedly provided with hinge bases, the hinge bases are rotatably provided with rotation plates, and the upper ends of the hinge bases are connected with the lower surfaces of the support plates in an abutting mode, and can support the lower surfaces of the supplement molds; the other end face of the tegular fixed plates of the left mold and the right mold extends outward along a straight line which penetrates through the center of the circle of the corresponding tegular fixed plate to form a convex plate, the convex plates are provided with long round holes, one long round hole is close to the end of the corresponding tegular fixed plate and is communicated with a through hole of which the diameter is larger than the width of the long round hole, one screw penetrates through the long round hole, and the diameter of the screw head is larger than the width of the long round hole but is smaller than the diameter of the through hole. Compared with the prior art, parts at the left part and the right part of the suspended mold cannot generate interference, and are more conveniently locked.