On the basis of analyzing the deep—seated reasons why the upsurge of the application of DSS sweakened presently and summarizing the present condition and the existing problem of the model construction home and abroad．the paper first puts forward the theory framework of three levels intelligent struction model which is more suitable to the human thinking habit． The theory framew0rk consists of the comprehension layer of management problem ，the matching layer of problem and model，and the intelgent construction layer of mod e1．Then，the main research contents of the three parts are given in the paper