To provide an infrared sensor device which can accurately measure temperature without contact by making operational output between an infrared sensor element for receiving light and an infrared sensor element for compensation accurate, and improve a production yield of the infrared sensor device.

The infrared sensor device comprises a substrate 1, a frame body 2 in which a mounting part 2a is formed on a pair of side parts both of which are faced each other, a translucent cover member 6 in which a shading film 6a is provided on the upper part of an infrared sensor element 5 and covers the upper surface of the frame body 2 surrounding the infrared sensor element 5, and an input/output terminal inserted in the mounting part 2a. Between infrared sensors 4 and 5 and below the edge of the shading film 6a, a slit 2b having a certain length is formed downward from the upper edge of the frame body 2 on an inner surface of a pair of sides facing each other of the frame body 2. A shading plate 7, both ends of which are inserted in the slits 2b, is provided between the infrared sensors 4 and 5 at intervals of 0.1 to 0.3 mm apart from each infrared sensor.