The invention discloses a method and system for deleting a mutually inclusive loss assessment project in the intelligent loss assessment of the car insurance. The method comprises the steps: storing loss assessment relation data into an accessory basic database; searching the loss assessment relation data in the accessory basic database according to a loss assessment project selected by an investigator during investigation and loss assessment, and carrying out the automatic recognition of an inclusive loss assessment project; obtaining and displaying a to-deleted loss assessment project if the recognition result has the mutually inclusive loss assessment project. According to the invention, the method achieves the automatic deleting of the inclusive loss assessment project through functions of system prompt accessories and work time mutually inclusive project, achieves the automatic deleting of system management and control inclusive leakage, and greatly improves the efficiency and scale of inclusive leakage control.