A microphone head device includes a base unit, a microphone head unit and a connecting rod unit. The microphone head unit is disposed on the base unit, and includes a microphone head seat and a dynamic subunit mounted on the microphone head seat. The dynamic subunit includes a mounting seat, a first magnetic member disposed on the mounting seat, a coil surrounding the first magnetic member, and a vibrating plate disposed over the first magnetic member and connected to the coil. The connecting rod unit extends in an up-down direction through the first magnetic member, the mounting seat and the microphone head seat such that the first magnetic member, the mounting seat and the microphone head set are separably secured.