The article deals with the roles of Chinese Christian NGOs for social service and the implications for North Korea. The article consists of 4 parts: Chinese NGOs and the roles for social service, possibility of Chinese Christian NGOs for social service, the implications for North Korea, and missionary tasks of Korean Churches for both China and North Korea. The first part discusses necessity of NGOs for social service in China which has been in sufferings such as gap of the rich and the poor, and unemployment due to the economic reform policies of China. The reform policy motivated to establish many kinds of NGOs in Chinese civil society. Under the socialist political rule Chinese NGOs are characterized with the supplementary roles for Chinese authority or mediation roles between the authority and people. The second part analyzes the Chinese Christian NGOs and their social roles. Under the religious policies of the Chinese regime, the history and theology of the three-self church and so-called the home-based church are described. Their social roles are analyzed in the perspective of NPO which is existed for public service. Particularly the activities of the Amity Foundation, an excellent Christian NGO in China are emphasized. The third part describes some possibilities of Christian NGOs for social service in North Korea which has just started to exercise the economic reform policy. During implementing the policy most of North Korean people have been suffered from social problems such as gap between the rich and the poor. NGOs can contribute to relieve North Korean from social poverty. Also the society needs some Christian NGOs. In conclusion the article suggests two tasks to the Korean Churches in the perspective of NGO. First, the Churches are asked to support to establish Christian NGOs in North Korea such as the Amity Foundation in China. Second, the Churches should reflect their mission policies for China which emphasized on conversion and church planting. Instead the Churches are asked to support to develop Christian NGOs in China.