objective To understand the problems existing in bedside-shift and put forward pertinent countermeasures.

This article,applying the ISO14000 standard,introduces the theory of life cycle and environmental impacts assessement, which is followed by the environemtal impacts assessment of panel bed stand.

The structure of CA6140 Machine tools' headstock is a typical chapter of the course of Metal Cutting Machine Tool, it is a good approach of study structural component by removing and mapping headstock, and on the basis of this the introduction of reversal innovative method will expand the thought of designing, shorten the products' development cycle and reduce the cost.