This thesis`s purpose is to critically examine the explanation of `genre` which is one of the contents in the junior high school`s textbook, called `literature`. The `genre` is the first step to understand the literature. Thus, in order to properly write the `literature`, the textbook, it is important to write the `genre` description well. Also, `genre` do an important job in the organizations of the textbook. To make textbook divisions well, we need to accurately place genre`s divisions and its arrangements. And literary genre is a very complicated theory. It is important to explain easily the complex theory and write easily so that we can help high schoolers to appreciate literature works properly. Like I said before, the description of genre is very important in high school studying. However, there are several problems in nowadays textbooks. Firstly, there are some problems in the words of the large genre. Some textbooks use words as Lyric, Epic, Drama, Essay. However, there are textbooks that use words such as singing, telling, showing, informing. Especially the word, `singing` is a problem among those words. Large genre is including all the historical genre, and to be a characteristics of concrete and individual historical genre s work. But the word, `singing` isn`t really right word to show characteristics of the "Lyric genre". Korean Chinese poetries and many modem poetries are difficult to empress itself in the word, `singing`. Secondly, the first part s explanation of genre and the last part`s idea of literary work aren`t matched each other very well. In front part, they use the word such as Lyric and in the back, they use poetry . Also in front, they use `epic` and at the back, they use `novel`. `Lyric` verses `poetry` and `epic` verses novel contains a very different meanings. If we use words differently, it will make the understandmg of the poetry and novel harder. Thirdly, they make a various divisions of genre in many different basis, and confuse the `large genre` with `small genre`. The word meaning of genre is kind , but in the literature theory, its idea is more like `structure`, or `style`. However, in the textbook, they classify literature genre excessively. Some divisions are wrong. If they make too much divisions, it will rather disturb in understanding the poetry and the novel. The literature genre is better to simply classify to help understandings and appreciate the literature work.