In judicial practice, there is a confusion of generalization in denying the legal personality of affiliated corporations, which contradicts the basic concept of modern corporation law that corporations have independent legal personality and may affect the development and growth of group corporations in practice. The generalization of the legal personality of affiliated corporations can mainly be attributed to the absence of substantive law, excessive interference of irrational judicial trial concepts in commercial autonomy, and more comprehensive protection of creditor rights and interests by the system of denying legal personality. The Corporation Law of the People's Republic of China, which is currently being revised, has initially filled the legislative gap in the system of denying the legal personality of affiliated companies, but it is still advisable to refine the recognition standards. In future judicial practice, when denying the legal personality of affiliated corporations, the guiding role of the 15th guiding case should be fully utilized. The judge should consider factors such as whether personnel and business are mixed, and regard “whether property is mixed” as the core, to determine whether the legal personality of affiliated corporations is mixed. At the same time, the judge should consider whether “personality confusion behavior” seriously affects the interests of corporation creditors. In addition, judicial practice should strengthen the commercial trial thinking of respecting commercial autonomy, and adhere to the judgment position of denying the legal personality of affiliated corporations in individual cases.