Just as more and more people realize the importance of occupational disease of the laptop, determining how to solve the problem puzzled many scientists and technicians. The ergonomic theory is used in designing the keyboard of the laptop in the paper. Considering the defects in the design of the keyboard from the ergonomic angle, and the facets of moving the location of the whole keyboard, the unique shape design of "A" and the layout of the location of some key-presses are developed to improve and redesign the keyboard of the laptop. The design is humanism and easier to operate. The efficiency and practicality of the new design is better.