With the development of social culture and science and technology, the number and types of museums are increasing. The classification of museums is mainly based on the nature and characteristics of museum collections, exhibitions and educational activities. Secondly, it is the source of funds and the clients. Foreign museums, mainly western museums, are generally divided into four categories: art museums, history museums, science museums and thematic museums. Art museums, including painting, sculpture, decorative art, practical art and industrial art museums. There are also museums, including antiques, folk customs and primitive art. Some art galleries also display modern art, such as movies, plays and music. World-famous art museums include Louvre Museum, Metropolitan Museum of Art and Tashi Museum in Elmy. Historical museums, including museums of national history and cultural history, and museums built on archaeological sites, historical sites or ancient battlefields also belong to this category. The National Museum of Anthropology in Mexico and the National Museum of Anthropology in Peru are famous historical museums. Science museums, including natural history museums. Museums covering celestial bodies, plants, animals, minerals and natural sciences, as well as practical and technical sciences also belong to this category. The British Museum of Natural History, the American Museum of Natural History and the Discovery Palace in Paris all belong to this category. Specialized museums, including open-air museums, children's museums and local museums, the latter involves the nature, history and art of this area. Famous ones include Brooklyn Children's Museum and Scanson Open-air Museum. The International Museum Association classifies zoos, botanical gardens, aquariums, nature reserves, science centers and planetariums, as well as long-term storage institutions and exhibition halls in libraries and archives. Before 1988, China museums were divided into three categories: specialized museums, memorial museums and comprehensive museums, and the National Bureau of Statistics also published the development figures according to these three categories of museums. Authorities and experts in charge of the China museum industry believe that at this stage, it is appropriate to divide the China museum into four categories: history, art, science and technology, and comprehensive according to the actual situation in China. Historical museums display their collections from a historical perspective, for example, the Chinese History Museum, the Chinese Revolution Museum, the Xi 'an Banpo Ruins Museum, the Terracotta Warriors Museum, the Quanzhou Overseas Traffic History Museum, the Jingdezhen Ceramic History Museum, the Beijing Lu Xun Museum, and so on. Art museums mainly display the artistic and aesthetic values of the collections, such as the Palace Museum, Nanyang Han Painting Museum, Guangdong Folk Crafts Museum, Beijing Dazhong Temple Ancient Bell Museum, Xu Beihong Memorial Hall, Tianjin Theatre Museum, etc. Natural science museums display nature in a classified, developed or ecological way, and display macro or micro scientific achievements in a three-dimensional way, such as geological museum, Beijing Natural History Museum, Zigong Dinosaur Museum, Taiwan Province Insect Science Museum, Science and Technology Museum, and Liuzhou Bailiandong Cave Science Museum. Comprehensive museums comprehensively display local natural, historical, revolutionary and artistic collections, such as Nantong Museum, Shandong Museum, Hunan Museum, Inner Mongolia Autonomous Region Museum, Heilongjiang Museum and Gansu Museum.