Abstract: A head-mounted display device relates to the field of electronic products.

Abstract: The present application relates to smart glasses including: a frame; a first temple and a second temple, head ends of which are connected to two opposite sides of the frame, the first temple and the second temple each including a first temple member and a second temple member arranged opposite to each other, the first temple member and the second temple member being connected to form an accommodating cavity; a first circuit board accommodated in the accommodating cavity; an external interface provided at a tail end of at least one of the first temple and the second temple, the external interface being electrically connected to the first circuit board; and a first fastener fitted over an outer periphery of the tail end of the temple provided with the external interface, to fix tail ends of the connected first temple member and second temple member.