To improve detection sensitiveness, α ray detection sensitiveness especially, improve the efficiency of the whole process including inspection, and reduce in an occupying space.

In this clothes monitor, clothes 10 is towed while being hung on a hanger 11 and conveyed by means of respective conveyors 5, 6 so as to be checked, stored, and stored or rejected. The clothes 10 passes through a pair of upper and lower relative spaces in a detector 2 while being brought close to the respective detector surfaces, and a distance between the clothes 10 and the detector 2 is reduced as much as possible for improving detection sensitiveness. A guide frame 22, which covers the surface of the respective detectors 2 on the upper side and the lower side and is provided with through holes on the whole surface, is provided. A sorting guide apparatus 9 is arranged, and sorting is carried out according to the existence/absence of dirt, while one of two positions such as a position shown in a figure and a lower rotation position is selected. The clothes 10 without any dirt is vertically hung on a guide rail 8 via the sorting guide apparatus 9 so as to be sequently piled and stored. The clothes 10 with dirt, is removed from a conveying path by turning the sorting guide apparatus 9 downward so as to be dropped and stored in a container 22.