The present invention provides a condenser microphone, comprising a substrate, and a back plate and a vibrating diaphragm which are arranged on the substrate; the back plate is arranged on the upper side and/or the lower side of the vibrating diaphragm; and the vibrating diaphragm is provided with a protruding layer or a corrugated membrane structure layer. With the above invention, the area of the vibrating diaphragm and the capacitance at the lateral side of the condenser microphone can be increased, so as to achieve the effect of improving the sensitivity of the condenser microphone.