The utility model relates to an intercom docking station and applied this docking station's intercom combined system, comprising an one -chip microcomputer, 2.5mm audio interface, 3.5mm audio interface, a level conversion module, the 2nd level conversion module, the digital analog conversion module, analog -to -digital conversion module, a bluetooth modul, bluetooth antenna, the PTT button, the switch button, the power modul, 2.5mm audio interface through a level conversion module and singlechip USART TX pin electricity is connected, 2.5mm audio interface pass through analog -to -digital conversion module and monolithic electromechanics and be connected, 3.5mm audio interface through the 2nd level conversion module and singlechip USART RX pin electricity is connected, 3.5mm audio interfacebe connected through digital analog conversion module and monolithic are electromechanical, bluetooth antenna passes through bluetooth module and is connected with the singlechip, switch button and PTT button are connected with the monolithic is electromechanical respectively, power module is connected with the monolithic is electromechanical. This intercom docking station is connected with the intercom, realizes intercom extension bluetooth function.