To provide an appearance inspection device capable of performing excellent appearance inspection by improving the inspection accuracy further, even if an unmeasurable part exists on an object to be imaged.

Cream solder C attached to a pad disposed on a printed circuit board K is imaged by a CCD (charge coupled device) camera 6. Three-dimensional measurement of the cream solder C is performed based on the image, and the appearance inspection is performed. In this case, an unmeasurable spot C2 in the whole shape of the cream solder C is detected. Then, correction is performed, for filling up the unmeasurable spot C2 with a shape C4 formed by integrating a plurality of geometric shapes. The volume of the cream solder C after correction is measured, and the quality on the cream solder C is inspected.