The present disclosure provides a backlight source and a display apparatus. The backlight source comprises: a light guide plate and an adhesive frame. The light guide plate comprises: a light incidence face, a light exit face connected to the light incidence face, a bottom face opposed to the light exit face, and at least one lateral faces configured to connect the light exit face to the bottom face and to be inclined with respect to the bottom face, a projection of the at least one lateral faces with respect to the bottom face falling within the bottom face. The adhesive frame is located at a periphery of the light guide plate, wherein faces of the adhesive frame which face towards the respective lateral faces are matched with the respective lateral faces.

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