Abstract: Due to the particularity of cross-fault flow deformation data, the data is usually processed by user’s own processing software, and there is a lack of software for daily processing of cross-fault flow deformation data. Based on this situation, the processing software for daily cross-fault flow deformation data is developed in view of the Windows system. Using C# language, MySQL database in this article, the processing software can not only store and monitor site monitoring data, but also has multiple functions including uneven interval data pre-processing, data processing, edit and output of image and auxiliary information etc. This processing software will further promote cross-fault flow deformation data to play a role in earthquake prevention and disaster reduction.