Abstract: A wireless microphone includes a barrel that includes a grip having top and bottom ends. The barrel further includes a battery accommodating section connected to the bottom end of the grip. The battery accommodating section has at least one battery seat formed with an outward opening and configured for receiving and electrically connecting to a battery, and is formed with an accommodation space disposed adjacent to the at least one battery seat. The wireless microphone further includes a battery cap removably sleevable over the battery accommodating section, and an audio pick-up unit mounted to the top end of the grip and configured to pick-up a sound signal. In addition, the wireless microphone includes a circuit unit that includes a control circuit board and an antenna.