The invention discloses a method for automatic call shift of Bluetooth earphone. The method includes: the Bluetooth earphone couples with the gateway, and enters the searching state; in the searching state, the earphone is in call scanning mode, the gateway call the earphone; the gateway create connection to the earphone and assures the quality has enough security, then the earphone and the gateway enter the holding state; in the holding state, if the quality is stable, the gateway registers the mobile phone number fixed network, the ear phone and the gateway enters the on-line state; in the on-line state, when the fixed telephone call the mobile phone, the call is transformed to the gateway, then uses the Bluetooth earphone to receive the call; in the on-line state, the close and connection between the earphone and the gateway or the quality is decreased to the threshold value, the gateway logouts the mobile phone number, the gateway and mobile phone enters the searching state. When the earphone and the gateway have the cal shifting function, the user needn't to bear the interruption and fading of mobile phone signal, the quality is upgraded. The saves the speak time, at the same time; it prolongs the communication and waiting time.