Objective To improve the application level of modified atmosphere packaging evaluation for fruits and vegetables. Methods Based on the BP Network, the status in quo of fruits and vegetables modified atmosphere packaging evaluation is analyzed. The principle of evaluating method was systematically introduced. To resolve the problem of MAP evaluation, the parameters of MAP were analyzed, and the process of evaluation was introduced. Taking beef as an example, evaluating indexes such as pH value, TVB-N ( total volatile basic nitrogen) value, drip loss, total bacterial count and tincture were selected, and the model of MAP evaluation was set up and proved by case study. Results From the result, it was easily concluded that the values of evaluating samples MAP2, MAP6 and MAP9 were 0. 61, 0. 83 and 0. 69, respectively, consistent with the MAP performance of beef. Conclusion This method is practical and applicable for all MAP evaluation and provides basis for MAP design.