Based on economic analysis,we can see that positive externalities of educational internship opportunities led to market failure,as opposed to the ideal demand for normal universities’teachers,educational internship opportunities were not enough.

The necessity of strengthening the education of computer for librarian in college is discussed; the content of computer education for librarian and the concrete measure to be adopted are put forward.

Certainly, education of computer is also to run through all the time all-round and complicated job, from elementary school to junior middle school and to high school, the different stage has the different education content and teaching characteristic.

A series of researches on the reform of teaching methods ,dealing with the contents of teaching ,improving of the way of test and examination as well as the training of srudents ability to practice computer was discussed based on the current conditions of computer teaching in our university,subject of teaching and researching.

According to the changes of sobriety抯 needs for computer appliance persons, the article analyze the existing problems in computer teaching in professional and technical college.

The article gives an analysis of current computer safety status,the seriousness of computer-re- lated crime and the spread of computer virus,then expounds the important position of computer teaching in public security education and puts forward some measures to carry on course construction.