It refers to the process of collecting all kinds of information in an organized and planned way according to the requirements of tax work and the pre-determined investigation contents and methods. According to different research purposes and survey objects, different survey methods are selected for tax statistics survey. For example, tax statistical investigation can be divided into statistical statements and special investigations according to its organizational form.

Special investigation of tax statistics: Special investigation of tax statistics is an organizational form of collecting data for a specific purpose, an irregular investigation and a supplement to regular reports.

Tax statistics report: Tax statistics report is a regular report that reflects certain indicators according to the statistical principle, the characteristics and needs of tax work and the original documents, and is filled in by the grass-roots tax bureau according to the unified form, unified caliber, unified content, calculation method and reporting time. Tax statistics report is one of the important work contents of tax department, which reflects the existing way of tax realized and paid by taxpayers in different time and space, and reflects the total amount and structural characteristics of national tax revenue in a certain period. It is the main basis for tax authorities to provide information and report tax payment.