In order to manage and conserve efficiently the nature and life of a nation, the best way for it should be depended on an investment in the nature education for children. The place that can be performed the efficient conduct on nature education for children is the Natural History Museum or Nature Science Museum. But It is really hard to find the active applications of children education in Korea even though there are some Natural History Museum and some Institutes related with nature. The problem in Korea is now a few number of Nature Museum and the absolute insufficiency of man power in these museum. Nature Museum established already have to be transformed as one emphasized on education. Also the number of Natural Museum have to increase in Korea continuously. Fortunately, the nature education is opening in some Nature Museum in Korea recently even uncomfortable circumstances. The Natural History Museum, Hannam University, held the nature classroom for children living in Taejon city mainly who are interested in nature from the early of 1998. Through our classroom, we catched that the children quality is an important consideration in the selection of subject and the proceeding of class. Firstly, children are very curious for any kinds of things. Secondly, most of them like a living material. Thirdly, they are in the active moving situation during classroom time and so prefer outside to inside. If children quality is reflected in educational program sufficiently, the classroom will be advanced one. Nature classroom for children held in our museum this year was so successful even with some trial and error. So we'd like introduce the contents of education program and some problems of the management to here. We hope this report to be useful for the Nature Museum considering of the practice of education program.