Abstract: A broadcasting device with communication mechanism applied to a handheld device includes a body, a control module, a sound broadcasting module, and a communication module; an upper portion of the body has an interchangeable connecting member electrically connecting with the handheld device; the control module is in the body and electrically connects with the connecting member; the sound broadcasting module is at the lateral portion of the body and electrically connects with the control module, and broadcasts the sound from the handheld device; the communication module is at the lateral portion of the body and electrically connects with the control module, and broadcasts sound through the sound broadcasting module.