Tourism is so important and any countries must regard to tourism. We can forecast rate of traveling and expenditure by tourist. Japan is one of the Asian country with lots of beautiful places with attracting culture, beverage, food and other things. We use forecasting model. We find up 91 percentage of forecasting was accuracy. Application of rough set is very suitable and new for forecasting it. Tourist expenditure in any country is so important.

Saman Hazrati was born in 1989. He received the B.A. degree in physics solid from the University of Malayer,Iran, in 2014 and the M.A. degree in MBA from the the University of Payamnoor, Hamedan, in 2017. He has served in research, for the past 2 years. He is the author of several articles in management's issues.