The invention relates to the technical field of computer software applications, and in particular relates to a familial defect upgrade system and method of an ICD model file. The invention provides a familial defect upgrade method of the ICD model file. The method comprises the following steps: step one, acquiring a to-be-upgraded ICD model file withfamilial defects; step two, acquiring application range data of the to-be-upgraded ICD model file from a pre-established Hash mapping table according to a name or model number of the to-be-upgraded ICD model file; step three, searching from an ICD standard library of the State Grid Corporation of China according to the application range data to acquire a corresponding standard ICD model file; and step four, upgrading the to-be-upgraded ICD model file according to the standard ICD model file. Through the adoption of the method provided by the application, the upgrade range of the ICD model file with the familial defects is determined through the Hash mapping, the operation of artificially searching in an in-station device is avoided, the upgrade range can be fast and precisely positioned, queried and determined, thework intensity of workers can be greatly lowered, and the practicability is strong.