Head Bluetooth earphone allowing slidable folding

The utility model discloses a head Bluetooth earphone allowing slidable folding. The earphone comprises a head sleeve and two sliding strips, wherein the two sliding strips are hinged at two tail ends of the head sleeve; a horn cover is connected on the each sliding strip in a slidable manner, the horn cover comprises an upper cover and a bottom shell, wherein the upper cover and the bottom shell are connected in a fixed manner, and form a sealing chamber, a sliding groove disposed in the sealing chamber is disposed in the bottom shell, a sliding rail in cooperation with the sliding groove is disposed on the sliding strip, vertically distributed clamping teeth are disposed on two side walls of the sliding groove in a uniform manner, elastic contacts in adaption with clamping teeth at the opposite side are disposed at two sides of the sliding rail in a uniform manner, the horn cover slides up and down on the sliding strip through the adaption of the elastic contacts and the clamping teeth; and a converting interface in electrical connection with the earphone circuit board is formed on the horn cover. According to the head Bluetooth earphone, the position of a horn can be adjusted through sliding, so that the head Bluetooth earphone can be worn by different users; the two sliding strips and the head sleeve can be folded, so that the size of the head Bluetooth earphone is reduced and carriage is facilitated.