At present many scholars and government agencies pay more attention to the level of informationization development and the related appraisals than to the appraisal of software service providers, who affect the level of informationization development and even the capacity of informationization exertion in the future. According to the self-influence factors and development demand that exit in the process of China's informationization at present, this article obtains correlative index, through the methods of construction of appraisal table, producing of entry, classification and so on. And it does the evaluation on the software service provider serviceability by the correlative indicators system.