Moving-coil sounder vibrating diaphragm

The utility model discloses a moving-coil sounder vibrating diaphragm, comprising a ring folding part at an edge and a central dome part; wherein, the dome part is arched and is equipped with a stiffener. By using the design of arranging the stiffener on the arched dome part, the intensity of the dome part is increased, thereby improving the acoustic performance of a moving-coil sounder.