The invention discloses a roll-control electronic module storage reliability assessment method integrating a process and a reliability block diagram. The method comprises the steps that firstly, a roll-control electronic module function simulation model is established, a sensitivity analyzing method is utilized to determine bottom-layer key components and devices affecting output characteristics of a roll-control electronic module by combining with investigation results of manufacturers; secondly, initial distribution of output characteristic parameters is analyzed by combining with a failuremode and a failure mechanism, storage of degeneration test measured data is promoted, and storage degeneration data of the bottom-layer key components and devices having distribution characteristics is obtained; finally, by combining with a failure threshold value and the established roll-control electronic module storage reliability block diagram, the roll-control electronic module storage reliability is obtained. The problem is solved that the accuracy of roll-control electronic module storage reliability assessment is low under the small sub-sample problem, and a new thought is provided forroll-control electronic module storage reliability assessment.