The purpose of this study is to find out components of ‘intercultural communication ability’ established as key competence of Korean language education suited to a multicultural society, and suggest a convergence teaching-learning plan between subjects for the foregoing. ‘Intercultural communication ability’ refers to the ability that learners in multicultural society sharing various knowledge and values and exchanging various cultural backgrounds with members actively through a complex channel understand, respect and communicate reciprocality of various cultures encircling them. ‘Intercultural communication ability’, as key competence of Korean language subject, is constructed based on the combination of components corresponding to ‘knowledge, function and attitude’, Components of ‘intercultural communication ability’ are classified as ‘knowledge of various linguistic cultures’, ‘knowledge of reciprocal problem-solving’, ‘ability to use accurate language’, ‘ability to form a cooperative relation, ‘attitude respecting diversity’ and ‘caring attitude’ according to the categories of ‘knowledge, function and attitude’. ‘Intercultural communication ability’ corresponds to the objective that learners living here now and will live in the future society should develop, so an effective teaching-learning plan for increasing ‘intercultural communication ability’ should be prepared. For the objective, teaching-learning in convergence education aiming at the integration between subjects as a practical mode can be actively utilized. Of the components of ‘intercultural communication ability’, this study suggested a convergence teaching-learning plan for ‘caring attitude’ based on the ‘Shared Model’ that realized integration between Korean language and Moral subjects. This means that this study prepared a teaching-learning course for ‘caring’ by applying a complex model that ‘value inquiring learning method’ and ‘role playing learning method’ are integrated for enabling learners to fulfill ‘caring attitude’ in their life by seeking the value of ‘caring’ according to the situation of conversation.