A study on the classification of science by dimension

Starting from the definition of the science,the authors analyze the various existent classifications of science currently.By discussing the content,basis,purpose,meaning and trend of the classification of science in six dimensions in detail,the authors try to reveal the internal relations of these classifications of science and know the overall structure of the science.It will be of great benefit to us to understand the science,promoting the unity of science and predicting the future trends of science.One-dimension science answers the question of 'what is science',two-dimension sciences include little and big science,soft and hard science as well as pure and implied science,three-dimension sciences are usually natural science,social science and literae humaniores,four-dimension sciences are the above three one and interdisciplinary,five-dimension sciences are formal science,natural science,technological science,social science and humanity,six-dimension sciences includes philosophy,symbol science,natural science,social science,spirit science and cultural science.