The Classification of Chinese Utility Classes Agro-cultural Heritage from Multidimensional Perspective

China was a traditional agricultural country since ancient times. All kinds of agricultural tools indicated the continuous heritage and sustainable development of agriculture production technique. The utility classes Agro-cultural Heritage was one of the most important materials supporting Chinese agricultural civilization, which was dominated by national agricultural tool in the period of Chinese traditional agriculture, as well as related with some sideline production tools closely connected with agriculture and farmers' production and daily life. It can divide variety complicated agricultural tools from four dimensions: use function, historical period, agriculture geographical features, and application object. The specific application of these four methods should pay more attention on actual acquirement so as to build up a coherent and rational classification system.