The invention provides a multi-functional flap anchor. The anchor comprises a central pipe, wherein both ends of the central pipe are respectively connected with an upper contact and a lower contact, an anchor sheet component is arranged between the upper contact and the end part of the central pipe, one side of the anchor sheet component is rotationally connected with the end part of the central pipe through a connector in a circumferential direction, the lower end of the lower contact is connected with a scraping component, a rubber tube sealing component, a slip component and a slip sliding driving component successively and movably sleeve the central pipe between the connector and the lower contact from top to bottom, and the reciprocating sliding of the slip sliding driving component on the central pipe successively drives the slip component to be used for clamping sealing and unsealing of the slip component, and the sealing and unsealing of the rubber tube sealing component. According to the invention, the functions of creep prevention, sealing, deflection resisting, and scraping pipes under a well are realized, the structure of a pipe column is simplified, the complex degree of construction operation is reduced, the service efficiency of the flap anchor is improved, and further the exploitation effect of individual wells is improved.