For the multi⁃performance evaluation model in the complex coking production process, the evaluation index is single, and the evaluation index can only reflect the production one⁃sidedly.The process without considering the problem of global factors, use the Analytic Hierarchy Process (AHP) to comprehensively consider safety, stability and economic aspects, and establish a global performance evaluation model. In order to solve the problem that decision makers are more likely to assign uncertainties to multiple indicators, use the intuitionistic fuzzy set (IFS) to obtain the preference relationship including membership degree, non⁃membership degree and hesitation degree. Consider the irrationality of consistency threshold, introduce a new threshold, and use entropy and cross entropy to calculate the index weight, and finally obtain the performance state of the target system. Finally, two different operating states of the coking production process were evaluated to prove the effectiveness and feasibility of the IFAHP method.