Sensitive data protection method and device and storage medium

The invention discloses a sensitive data protection method and device and a storage medium, and the method comprises the steps: obtaining a data protection rule base in response to a data protection request for protection data, screening out a data protection rule containing the protection data in a data protection range from the data protection rule base, obtaining a data marking rule, and storing the data marking rule in a database; extracting sensitive data contained in the protection data by using sensitive data indication parameters corresponding to the data marking rules, marking rule levels corresponding to the data marking rules for the sensitive data, and then obtaining the protection data based on the data access level of the data request end and the rule levels of the sensitive data marked in the protection data. And determining an access strategy for protecting the data. According to the method, accurate identification of sensitive data can be realized, the method is suitable for data protection o