Telescopic desk for indoor use

The utility model discloses a telescopic desk for indoor use, comprising a bottom plate, a desk plate, a main support plate, two auxiliary support plates and sliding rods. Retaining plates are vertically disposed on two lateral edges of the bottom plate. One end of the main support plate is hinged to the bottom of the desk plate, and the other end thereof is hinged to the surface of the bottom plate. One end of every auxiliary support plate is hinged to the bottom of the desk plate; the other end thereof is hinged to one sliding rod. The sliding rods are disposed on the surface of the bottom plate and are perpendicular to the front-rear direction of the bottom plate; two ends of every sliding rod are abutted to the retaining plates on the bottom plate, respectively. Hinging rotation planes of the main support plate and the auxiliary support plates are both parallel to the front-rear vertical plane of the bottom plate. Lines of hinging parts, on the desk plate, of the main support and the auxiliary support plates form a regular triangle. The telescopic desk for indoor use can be expanded for use.