Financial sharing platform provides data support for big data auditing. This paper first describes the financial shared service model and big data auditing and then focuses on the application of big data visualization technology in auditing based on the application principle of big data technology in auditing. Secondly, a visualization method based on a deep confidence network to extract data features is proposed. The DBN network is trained on audit data, the DBN method is used to extract data feature values, and the feature results are presented after dimensionality reduction processing. Finally, the implementation process of big data audit based on the financial shared service model is determined. The audit analysis of SOE B is performed by using the visual analysis technology of big data. The audit results are as follows: The proportion of state-owned enterprise B’s construction project business to the current year’s revenue increases slightly year by year, decreases significantly in 2019, and resumes rapid growth in 2021. The annual net profit increased by 153.17% compared with the previous year’s net profit.