The research on North Korean poem, especially the war poem, has been conducted with its content as a center. It gave the first consideration to a topic or a message, therefore the poem’s fundamental element was handled without much interest. The war poem in particular was often evaluated as low grade on poetic figuration, and the lyricism, which is the proper function of the poem, was neglected. Therefore, this article focused on how the image, the most basic element of the poem, was used and it studied the aspect of image of nature that reveals the lyricism even in the extreme condition like the war. The image of nature was divided into realistic image, metaphorical image,and symbolic image. Their expressive patterns were looked into, and those images show distinctive characteristics. The realistic image is a image that you personally react or recall in view of the actual object. The metaphorical image is literally a image that is used metaphorically. Like empathy and prosopopeia, it studies the aspect of transition, which is a basic function of metaphor, on the other hand, it reveals a contrasting situation according to juxtapositional metaphor or looks into the aspect of regarding different objects in the same light. And the symbolic mental image is generally a image that is repeatedly used by many pieces by one poet or many different poets than a symbol of general concept that only suggests a vehicle without a tenor. And it often reveals the absolute existence or the value of supremacy. As a result of studying the image of nature that appeared on North Korean war poem, it showed that the poets in North and South Korea had different ideologies but they also both wished for humanism and shared same attitude toward peace. And even though they had different messages in poetic expression, they shared a same function of the true character of the poem that expresses poetic situation based on the lyricism. In spite of many researches that contradistinctively studied North and South Korean literature and attempted to overcome literature of division, those studies could not lead to productive results, only confirming their differences. This article finds its meaning by excluding ideological differences and reviewing North Korean poetry as focusing on basic characteristic of literary genre.