Abstract: Based on the characteristics of “Development and Application′s separation ”, a user-oriented component services commitment mechanism is proposed. To create the mechanism, this paper defines the approach sequence oriented component services from the component provider′s point of view, gives the comprehensive nature of component services, proposed a method for generating the component services which meet the comprehensive nature. The generating method gives a clear formal description of component services, means provide the component services commitment mechanism, and this description is a third-party verifiable. Proof of the related natures and cases study verifies the feasibility of the mechanism.