Refined oil product consumption tax data monitoring method and system

The invention discloses a refined oil product consumption tax data monitoring method, which comprises the following steps of: establishing a taxpayer data doubtful point library; by taking the taxpayer data doubtful point library as a reference, establishing ETL1 for data processing of corresponding doubtful point processing; binding the ETL1 with a corresponding doubtful point in the taxpayer data doubtful point library, and establishing an association relationship; regularly extracting historical data of the last month in a Jinsan library by means of a DBLINK tool of an ORACL database and synchronizing the historical data to the ETL1; importing the data processed by the ETL1 into a new business database; and establishing ETL2 according to actual requirements, and importing the data processed by the ETL2 into a target data table. The invention further discloses a refined oil product consumption tax data monitoring system. Taxpayers are screened according to different risk types, the taxpayers with problems c