Abstract: With the coming of the 21st century, what kinds of machines will interest us very much? How to give the reins to human beings in the mechanical systems? How to establish a new cooperation between man and machine and how to form a high-efficient man-machine integrated system? They are problems that we have to think about deeply. We should study a kind of new machine, which is named as a new phrase, the humachine system, is built to describe such system said above. Based on the synthetically analysis of development in the mechanical science, and combining with the updated achievements of the computer science, the paper will present the new ideas, the basic concepts and the theory structure of the humachine system.

Key words: Development direction, Humachine, Intelligent machine, Mechanical science