An image processing sensor which enables users to perform a setting operation accurately and easily while confirming an image of a target object is provided.The image processing sensor has a configuration in which a power supply board, an illumination substrate, a main substrate, an imaging substrate, and a display substrate are housed in an internal space of a casing. The casing includes a first casing member, a second casing member, and a coupling casing member. The coupling casing member is interposed between the first casing member and the second casing member.