Adjustable oral impression tray

The invention provides an adjustable oral impression tray, which comprises a tray body and a handle, wherein the handle is arranged at the arc-shaped top end of the tray body; the tray body comprises a base plate as well as an inner sidewall and an outer sidewall which are arranged on the edges of the inner and outer sides of the base plate; the radians of the inner sidewall and the outer sidewall are matched with the radians of corresponding edges of the base plate, and a groove with bottom narrower than an opening part is formed by the inner and outer sidewalls and the base plate; a slide strip which extends into the base plate is arranged on a part where the inner sidewall is contacted with the edge of the base plate, and/or a slide strip which extends into the base plate is arranged on a part where the outer sidewall is contacted with the edge of the base plate; and a slide way which is matched with the slide strip is formed inside the base plate. The adjustable oral impression tray disclosed by the invention can be adjusted to adapt to people requiring different impression tray widths, so as to extend the application scope to patients and shorten the time of selecting the impression trays by doctors; and a purpose that the impression tray provided by the invention is available to anyone is achieved.