To improve the policing efficiency under the present condition, we must revitalize the existing police force resources and readjusting police force scientifically in order to meet the needs of the development of social public order.

This paper has discussed subject librarians service from several aspects,including historical background,information service,service effect as well as problems and its countermeasures.

And people should also cultivate and improve the ability of non - verbal communication through various ways, and then enhance the service effect.

Analysis on the Constitutive Elements of Battled Tactics in Police Affairs;

The diversification of police affairs is an important foundation for the strategies of community police affairs, and is a basic platform for the socialization of it as well.

The socialization of police affairs refers to that the police affairs are popularized into the society and the working process becomes one adapting to the society.

A summary of the research on the "policing model" theory;

Public policing can be divided into three levels based on the criterion of the subject of public policing.

The informationization of police service is one of the important foundmental construction which the public security organ faces now, is the practice to implement the concrete practice of "Gold Shield Project", the key to advance modern police service mechanism, and a concrete action to improve the working efficiency of the police service.

The goal of constructing the public security information network system is to enhance maximally breadth and depth of collecting the information which leads police service work,strengthen maximally the sharing rate of information resources,and raise maximally the use of information resources.

With the development of urban construction,community police service plays an increasing role in crime control and prevention.