The traditional administration power theory of plaintiff qualification can t adapt to the development of litigation practice and meet the objective need of administrative public interest litigation,while it is widely accepted to choose the sue interest theory as the theory foundation of plaintiff qualification of administrative public interest litigation in developed countries and.

The interest of action is a criterion of judging whether civil acts can enter the field of relief.

To determine what is interest of action,we must think about all kinds of aspects that maybe have effects on the scope of civil jurisdiction.

Therefore, the interest of litigation, which is the traditional concept in the civil procedure law, catches the scholars attention and the scholars .

One is right to implement of litigation which is based on the right of supervision and the other is interest of litigation.

This essay probed into the definition to connotation of the profit of actions, its essence and function, and the problem of measure for profit of actions, etc.

To reconstruct our country s imperium civile s utilizing range ,we should put profit of actions as the basic core standard to measure imperium civile s utilizing range ,which is based on the modern ideal of judicature.