In recent years, with the rapid development of my country's online car‐hailing industry, many legal issues and related disputes have also followed. There are large disputes and differences in the judicial practice circles in my country regarding the settlement of the three commercial insurance claims disputes after the family private car is registered as an online car‐hailing traffic accident. This article aims to clarify the specific applicable rules of Article 52 of the "Insurance Law" in online car‐hailing commercial three‐party insurance claims disputes, focusing on the different identification standards of "significant increase in risk" and the insured's obligation to notify , And the legal consequences of the insured's failure to perform the notification obligation. Accordingly, it is a reference to unify the judicial judgment standards for such disputes, and promote the fair and efficient settlement of the three insurance claims disputes of the online car-hailing business, which is also conducive to promoting the healthy and sustainable development of the online car‐hailing industry.