The invention discloses establishment of a distribution network engineering equipment model selection rule base, comprising establishment of an engineering design parameter system base and establishment of an equipment model selection rule base. The invention can assist assessment experts in quickly, accurately and intelligently evaluating the rationality of engineering cost, innovate the assessment mode and improve the assessment efficiency. The invention solves the problems of uniform design assessment measure standards, large professional assessment workload and the like, greatly improves the efficiency and quality of distribution network engineering design assessment, and efficiently and accurately guides the perfection and investment control of distribution network engineering design schemes.