In the design phase of ARINC661 cockpit display system, a DF file state management method is proposed to address the problems of limited scalability and low storage efficiency faced by DF file state management. Firstly, by refining the attribute structure and response function of form components, a generalized form component model is constructed, which facilitates the unified management of form component states; on this basis, a hierarchical dynamic storage structure is designed, which realizes the optimized storage and fast positioning of target states; in addition, for the backup of the DF file states, lightweight log generation and parsing techniques are investigated, which facilitates the version restoration of DF files. Finally, several typical cockpit display screens are utilized to simulate and test the key technologies, and the results show that the method can quickly and accurately perform DF file state management at the design stage with good scalability and reliability, and the generated state logs take up more than 17.5% less memory space compared with the logs using the traditional format.