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The application of ergonomics in the tractor modeling has experinced three phases. They are design phases of mechanical center, “man-machine” system and “man-machine-environment” system. In the design phases of mechanical center, only considered mechanical design in terms of mechanics; In the design phases of “man-machine” system, man’s factor was attached importance to, relation of man and machine was emphasized. In the design phases of “man-machine-environment” system, man’s importance in the system and harmony of man-machine-environment were stressed. Each phase of change reflects the development of science and techonology, the progress of human design ideas, and the change of human values. Keywords-times; ergonomics; tractor moulding; design phase

From the Perspective of the Times to Research the Application of Ergonomics in the Tractor Moulding