This paper will examine why the historical significance of Donghak(東學) was not evaluated until now. It can be found in the academic atmosphere.At any rate, even from now, by comparing Eastern and Western thought. We will examine the unique contribution of Dong Hak Thought in the contemporary era.Todays the Cheondogyo(天道敎) maintains that just the Innaecheon s Thought(人乃天思想) can unify the South and North Koreas, and can be the world thought of future. Consequently we expect that greeting to age of “‘the Civilization from the East(文明東進論)”, the Korean nationalism based on the Donghak Thought with the its own mission for the performance of the Seong(誠, Sincerity), Gyong(敬, respect), and Sin(信, faith) can make the devided nations unify, and disrupted human races integrate, into one body(同歸一體).