The invention discloses a method for using static security analysis to assess flow insolubility of anticipated faults. The method for using the static security analysis to assess the flow insolubility of the anticipated faults includes: simulating a fault parameterization calculation model when flow of N-k anticipated faults which include faults of a single device or breaking faults of device groups are unsolvable by establishing the static security analysis, and solving unsolvable fracture surfaces of the fault flow based on an optimal multiple factor Newton method base principle, and finally obtaining a fault parameter result which represents the severity level of the flow insolubility and can be an assessment basis of the static security analysis for the severity level of the flow insolubility of the anticipated faults . The method for using the static security analysis to assess the flow insolubility of the anticipated faults calculates characteristic vector according to critical point jacobian matrix information, can provide sensitivity information to prevention and control, and remedies the defect that the flow insolubility of the severe anticipated faults can not be thoroughly analyzed and calculated, caused by the static security analysis.