The applicable principles of police eloquence are determined under the guide of Marxism linguistic theory and according to the practical eloquent activities of police s protecting people and punishing criminals; it is the principles that police must follow in their eloquent activities.

Nowadays, in Chinese criminal theory, there have still been no common opinion about concept and variety, nature of law and principle of application of competition of law and regulation.

At present, there is no unified final conclusion about the definition, characteristic and category of coincidence of law articles as well as its application principle in the circle of criminal theory in our country.