An impression tray set for edentulous jaw, including a pair of a maxillary impression tray and a mandibular impression tray for use in taking an intraoral impression of an patient including an edentulous patient, and capable of simultaneously recording bite position and height when taking the impression, is provided. An impression tray set for edentulous jaw is formed by a maxillary impression tray 1 and a mandibular impression tray 2 respectively including a tray main body 4 having a U-shaped groove on which an impression material is to be applied on a front surface side thereof, an engaging part formed on a back surface of the U-shaped groove in a position corresponding to an alveolar ridge of front teeth, and a handle part 6 that is detachably connected to the engaging part, and each of the maxillary impression tray 1 and the mandibular impression tray 2 includes projecting parts 7 being provided on the back surface, at left and right portions of the U-shaped groove in a position corresponding to an alveolar ridge from a first molar part to a premolar part, the projecting parts 7 being used for determining bite position and height in a state in which at least a part of flat top surfaces 7a of the projecting parts 7 contact each other when taking an impression.
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