In order to solve the problem of inaccurate evaluation criterion of equipment integrity, the evaluation method of equipment integrity based on state information was analyzed. Put forward acquiring path and selection criterion of state information, establish equipment integrity evaluation system model, and ascertain equipment key unit. According to the characteristics of the state information, D-S evidence theory and fuzzy comprehensive evaluation were adopted to process the data, and the equipment integrity evaluation was realized by combining with the index weight of the evaluation system, and verify through examples. The results show that the evaluation model and calculation method are practical and effective in equipment integrity evaluation.