The purpose of this study is to expolre Hong Kong and Japan inbound tourists’ purchase charactistics and shopping decision. In this study the technique of questionnaire survey is administered to collect 418 samples. Using t-test and Rough set analysis method, we find that Hong Kong and Japan inbound tourists have different charactistics of purchase and shopping decision. The findings imply that tourists' culture background appear different shopping charactistics in tourism industry. This study suggests tourism service managers should provide a profitable selling environment for tourists.