This thesis suggests some case and ideas on the strategy for teaching-learning method of korean language, especially in the environment under. It was focused on Thailand. The korean language education in Thailand has three precondition. That is as follows. First, the learners study lonely without help of other korean speaker. they have no proper chance to use korean. Second, the learners have poor english skills that acts as intermediate language in learning. foreign language as a second language. It comes from insufficient ability development in middle school course. Third, there is no public network to share teaching-learning strategy, education contents including curriculum offering.. This thesis propose contents frame of korean language education, that is not established yet in Thiland. The frame is composed of four factors, those are linguistic phenomenon, knowledge, acceptance, performance. And also this thesis several strategy of teaching-learning korean language by contents factors as empirical case. Those are called intermediate language strategy, game strategy, step strategy etc. This thesis expect many researchers take part in finding the strategical method of efficient teaching koran language education in the Environment under Dominant Influence of Mother Tongue.