The present disclosure provides an antenna system, applied to a mobile terminal, where the mobile terminal includes a 3D glass housing and a PCB board accommodated in the 3D glass housing; the antenna system includes at least one antenna assembly; the flexible circuit board includes a first portion that is bent and extends toward a first direction and a second portion that is bent and extends toward a second direction; the antenna assembly further includes a first antenna array disposed on the first portion and a second antenna array disposed on the second portion; In the present disclosure, the antenna system is small, the antenna is closely bonded with the 3D glass housing, the mechanical stability is high, and the antenna does not easily fail or deteriorate in performance due to damages.