Fuente: Wipo "BigData" The invention discloses a data analysis system and method for a financial automatic auditing platform, and relates to the technical field of financial platform data analysis. According to a work order declaration period, a period bill data set and a period work order text data set are generated; analyzing the periodic bill data set and the periodic work order text data set, identifying and marking abnormal data in the data sets, extracting the marked abnormal data, and forming an abnormal bill data set and an abnormal work order text data set; calculating a declaration abnormal value of each user in different work order declaration periods, and calculating an abnormal degree fluctuation value of each user according to the declaration abnormal value; analyzing an abnormal degree fluctuation mean value of the user according to the abnormal degree fluctuation value of the user, and performing security level evaluation on the user according to the abnormal degree fluctuation mean value; re-checking the bill images and the declaration work orders of the users of different grades by adopting different spot check proportions; the overall operation accuracy and efficiency of the system are improved; an accidental error caused by single calculation is prevented, and the robustness of the system is improved.