Children's museums as an important institute should take up the opportunity to develop its children by understanding their needs and to propose the exhibitions and activities. Also, they are unique places that bring children, families and communities together for quality interaction. These museums encourage children to think for themselves, expand their problem-solving creative exploration and exercise. Indoor and outdoor exhibits, programs and workshops are designed to engage children in simple and complex forms of play that result in foundational learning. In recent years, children's museums have been increasing rapidly. This article is describes definition and goals of them. Also, Some issues around the establishment and continuation of children's museums such as exhibit design criteria is discussed. (C) 2013 The Authors. Published by Elsevier Ltd.