摘要
本文对国内一般力学教科书中给出的正则变换的条件提出了不同看法，并根据哈密顿原理推导出了正则变换的充分必要条件．
In this paper, the auther puts forward a different view on the condition for canonical transfor-mation given by common mechanics textbooks. The neressary and sufficient condition for canonical transformation is derived by using Hamilton's pinciple.
