For organizing the various function moduls of computer aided logistic support (CALS) rationally, a useful interactive electronic technical manual (IETM) development platform based on S1000D specification was designed. In this paper, the system frame of the platform for IETM was given. And then the system structure of CSDB management software was presented. Realize various used function moduls in IETM development process. The design has a good reference meaning for the design of the platform for IETM based on S1000D specification.