Dong-hak is the most remarkable religion of a lot of Korean inherent religions since 19th century. This religion was founded by Choi Je-woo in April 1860. And it includes the national and social characters, because it advocated the national interests and the welfare of the people under the spirit of Sicheonju(侍天主) that everyone has to worship God or Heaven in his mind. Therefore in this paper, author will intend to present the unity spirits for the reunitication of Korea in the near future by discussing the religious thoughts of Dong-hak. After a declaration of the end of ideology by D. Bell, the world has been continually changed without conflict between Eastern and Western ideology. In other words, many countries of the world have entered into the age of mutual cooperation each other in these days. Accordingly Korean people have to prepare the unity spirits for Korean reunification. Dong-hak has originally included the common spirits of all south-north Korean people. The most important religious concept of Dong-hak is Sicheonju(侍天主). It means that everyone serves Heaven within this mind. And Cheonju means Heaven and Hanwoolnim who was called Samsin(三神) from the initial Korean religion. Samsin is the first King's name of three Chosum(三朝鮮) of ancient Korea. Thus Cheonju will be called a revival of Samsin Hanwoolnim that was the first King and God of ancient Korea three Kingdoms. Therefore author thinks we will suggest the unity spirits for Korean reunification in near future by discussing on Dong-hak thoughts.