A Bluetooth earphone having a semi-automatic receiving function includes a housing, an earphone, a first flexible portion, a button, and a fastening mechanism. The housing has a receiving slot. The earphone is pivoted with the housing and received in the receiving slot that can be rotated to the outside of the housing. The first flexible portion located between the housing and the earphone provides a force to eject the earphone. The button is located on the housing and connected with the earphone. The fastening mechanism is located between the button and the housing to fasten the earphone in the receiving slot. The user presses the button to eject the earphone by utilizing the flexible force of the first flexible portion. Thereby, the earphone can be received in the housing to prevent the earphone from being broken due to the impacts of external forces.