Diopter adjusting system suitable for head-mounted display device

The invention discloses a diopter adjusting system suitable for head-mounted display equipment, and the diopter adjusting system comprises a visual module, an installation support, and an adjustment driving mechanism, and the adjustment driving mechanism is used for driving a display module to move relative to a lens assembly so as to adjust the object distance. The driving mechanism is adjusted to realize approaching and departing of the display module to the lens assembly in a reciprocating motion mode, so that the diopter of the vision module is adjusted in a mode of changing the object distance, the device is suitable for users with different vision conditions, a starting and ending point position monitoring and resetting system does not need to be arranged in the stroke of the display module, and the cost is reduced. In addition, through mutual cooperation of the sealing adjustment assembly and the dustproof mechanism, the dustproof sealing performance of the visual module is improved while air pressure