A cap body 3 is provided for covering a housing of a microphone body 2. The cap body 3 has an insertion hole 32 into which the housing is inserted, sound collecting holes 31a and 31b through which the exterior of the cap body 3 is in communication with the insertion hole 32. While the housing is inserted into the insertion hole 32, a sound collector 21 lies in the insertion hole 32, and the axis line direction of the sound collecting holes 31a and 31b are different from the directive axis of the microphone body 2 of which the housing is inserted in the insertion hole 32.