To the study deficiency of the fuzzy time series forecasting theory for real-time fuzzy variation trend of uncertain data sets, the intuitionistic fuzzy time series forecasting model is presented by using the intuitionistic fuzzy system of linear equations. In the proposed approach, the solution to the models is transformed into the linear programming problem. Then, the fuzzy connection rules of the sequence dates changing with time are reflected precisely. Meanwhile, the forecasting accuracy of time series in the complex environment is improved, thus greatly extending the intuitionistic fuzzy time series forecasting application. Finally, the classical instance verifies the effectiveness and superiority of the proposed method.