For sustainable, national landscape-planning, this study focused on land cover changes, landscape analysis methods from various perspectives on the landscape, legal system analysis related to landscape planning, and analysis of a basic spatial map for landscape planning. First of all, in Korea the focus is on the aesthetic aspect of the landscape, while foreign countries look at the landscape from multiple perspectives and tried to solve the problem of landscape damage on this basis. Next, looking at the changes in land cover, it was found that the urbanized area increased significantly, but the area of agricultural land and wetlands decreased significantly due to development plans. In addition, looking at the contents of the landscape plan in terms of the legal system, the legal system of the Republic of Korea included a multifunctional aspect of the landscape, but the contents were only at the level of policy suggestions. Finally, through a review of a basic spatial map for landscape planning, it was found that among various basic spatial maps, the biotope map is highly likely to be used when establishing national landscape plans. The results of this study are meaningful in that they have not only established the concept of landscape in terms of multifunctionality but also established improvement measures in terms of legal and institutional aspects and the basic spatial map.