Diaphragm of dynamic microphone

There is a dynamic microphone comprising: a diaphragm which can vibrate by an acoustic wave and a voice coil which is joined to the diaphragm so as to transverse a magnetic field formed by the magnet and can vibrate integratedly with the diaphragm, wherein a number of peripheral treatment agents for damping are coated in a dot shape or a discontinuous stripe shape at intervals onto either one of the front surface and the back surface of the portion of the diaphragm excluding the center dome. With the above construction, a change in stiffness of the diaphragm by the peripheral treatment agents is extremely reduced, it is prevented that the diaphragm resonates at a special frquency, a sudden attenuation of the low frequency limit is prevented, and a low sound can be also certainly collected.