A wireless Bluetooth apparatus with intercom and broadcasting functions and operating method thereof are disclosed. The wireless Bluetooth apparatus receives a voice message from a first user, divides it into a first partial voice message and a second partial voice message, and transmits them to a first electronic apparatus corresponding to the wireless Bluetooth apparatus through wireless Bluetooth technology. The first electronic apparatus uses a communication application program to transmit the second partial voice message to a second electronic apparatus corresponding to a second user corresponding to the first partial voice message. The second electronic apparatus uses the communication application program to receive the second partial voice message and transmits the second partial voice message to another wireless Bluetooth apparatus corresponding to the second electronic apparatus through wireless Bluetooth technology.