The invention discloses a diaphragm valve with a diaphragm fracture indication. The diaphragm valve comprises a valve body, a valve cover, a diaphragm, a valve clack, a valve rod, a valve rod nut anda hand wheel, wherein the diaphragm is fixedly arranged in a cavity between the valve cover and the valve body; the valve clack is fixedly arranged on the diaphragm; the valve rod is fixedly connectedwith the valve clack; the valve rod nut sleeves the valve rod, and is in threaded connection with the valve rod; the valve rod nut extends out from the valve cover; the position, above the valve cover, of the valve rod nut is sequentially in threaded connection with the hand wheel and a locking nut; a through hole is further formed in the valve cover; the upper portion of the through hole is connected with an indicating box; an indicating rod is arranged in the through hole; and the indicating rod extends out of the indicating box. The diaphragm valve can be used for conveniently finding thefracture of the diaphragm.