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.