In order to improve the effectiveness, visibility and specification of the TT&C software testing, this paper made an in-depth study according to its characteristics. At first, this paper presented a quality assessment model with high reliability and real-time demands getting idea from analytic hierarchy process (AHP). Then, the paper brought forward a dedicated simulation test environment and a generating method of software testing cases based on fault tree analysis (FTA). Next, the paper defined the software testing procedure learning from CMMI demands. At last, the paper gave the performance of quantitative assessment results in the form of a radar chart. Practice has proved that the given model of this paper can represent the software quality objectively, the generating method can improve the sufficiency of software testing cases effectively, and the defined procedure can ensure the specification of software testing availably.