Trusted Computing has become the research focus in information security field. Its idea is to embed a secure chip named TPM (Trusted Platform Module) in the computer’s hardware, with which a trust chain can be set up to ensure the trust of computer. Since the resources of TPM are restricted, the interfaces and capabilities are cumbersome. In order to solve these problems, TCG gave a TSS (TCG Software Stack) specification. According to the TSS specification, TSS consists of 4 modules. Among them, TSP (TSS Service Provider) is directly related to the applications layer, so its design will affect the convenience of the user application. Module division, relations of classes and objects operating methods of TSP were presented, which described a comprehensive TSP module development process. In addition, an application of TSS using was given.