This article tries to analyze paragraph 3 of article 20 of Criminal Law from four respects of the logical relation among articles; the legislative goals; the analogous legislation examples and the principle of a legally prescribed punishment for a specified crime.

As for the revising of the Criminal Law in 1979,he made the following valuable suggestions: to abolish analogy and to establish the principle of a legally prescribed punishment for a specified crime.

He supports a legally prescribed punishment for a specified crime,while he is not against to the analogy.

"No law does not expressly provided for the crime",which is the core substance of the principle of legality.

The Principle of a legally prescribed punishment for a specified crime is a basic principle in our Criminal Law.

The explanations of rules like this conform to the principle of a legally prescribed punishment for a specified crime and make the rules of criminal law closer to the real life.

The idea that the relative principle of legally prescribed punishment for a specified crime has dual functions of protecting both society and human rights actually confuses the function of criminal law and the principle of legally prescribed punishment for a specified crime and mistakes the entire function of criminal law for that of its c.

Transfer of Vision and Orientation on Value: Principle of Legality;

As society-oriented ideological trend springs up, the principle of legality has incurred suspicions for its individual-oriented position.

The interpretation of criminal law should conform to principle of legality and be limited to the "range of original text", which can be foreseen by ordinary person.