The objective of this study is to establish an evaluation method for the state of stains by rubbing by sole of footwear on inner walls. On the basis of the survey of the state of stains, the typical kinds of human rubbing matter are selected. To construct psychological scale, the sensory test is conducted. The color difference between stained and unstained material is measured. The relation between psychological scale and the color difference is presented as the evaluation index. On the basis of load and stains when some examinees practice the rubbing motions, one motion is selected as a representative.
