Optical machine fixing assembly and head-mounted display device

The utility model provides a fixing assembly of an optical machine and a head-mounted display device, the fixing assembly of the optical machine comprises a support beam and two optical machine supports, and the optical machine supports are connected with the support beam; the supporting beam comprises a connecting part and two supporting parts, a fixing part is arranged on the connecting part, the two supporting parts are arranged on the left side and the right side of the connecting part respectively, and a plurality of first fasteners are arranged at the tops of the supporting parts; a mounting part is arranged on the ray machine support, the ray machine support is arranged at the bottom of the supporting part, and the first fastener penetrates through the supporting part and then is detachably connected with the top of the ray machine support. According to the fixing assembly of the ray machine, the ray machine supports corresponding to the left eye and the right eye can be machined in advance respectivel