The purpose of this study is to review the current researches on “Language” as one of the five contents of child care and education guidelines, and examine the characteristics of the studies. The 62 articles were analyzed with a quantitative and qualitative approach. The results are as follows: 1) The studies on “Language” as one of the five contents have increased since 2005 and 70% of the studies correspond to the theoretical studies or the practical studies. 2) Among the practical studies, 90% of the researches are on the lectures targeted at teachers’ training school students, while the researches on the practical field such as childcare centers are very few. 3) Focusing the subject, the research on picture book and picture-card show account 23% which was the most, and most of them are related to the lectures in teachers’ training school. 4) It is pointed out that the process of the children’s language development and the student teachers’ development on “Language” as one of the five contents has been confused in this field.