This research utilized the combination between quantitative and qualitative researches. The research sample included Thai language course lecturers both Thai and South Korean persons, including 1st-4th year South Korean undergraduate students. The instruments used included the questionnaire on teaching strategy which also included Thai culture to be used in providing instruction on Thai language for South Korean students. The forms of tests assessing the perception on Thai culture of South Korean students. Two interview forms to interview the teachers and South Korean students on their perception and acquisition of Thai culture. The findings reveal the teacher's opinion on strategy to integrate Thai culture with the instruction on teaching Thai language to South Korean students studying Thai as a foreign language in aspects of integrating Thai language along Thai culture and instructional strategy integrated with Thai culture. The overall outcome reveals that the sample subjects agree mostly with such statement. Concerning the result of the perception on Thai culture of South Korean students, it was found that 14.29% of students had obtained the score at very good level, 70% at good level, 14.29% at moderate level, and 1.43% at minimal level. The average level was of 73.5 scores.