Abstract: In one aspect of the present disclosure, there is provided a dental mirror device comprising: a head having a mirror support to support a mirror thereon; a handle coupled to the head, wherein the handle includes a housing, and a body received in the housing, wherein a first hole is formed in the body; an air sprayer having a hose coupler at a distal end of the handle, an air flow channel formed in the head and handle and air-communicating with the hose coupler, and a sprayer member air-coupled to the air flow channel defined in the head to inject an air to the mirror; and an air flow switch received in the first hole to block or open the air flow channel.