As a core subject in the current international market economic activities, the parent-subsidiary company not only plays an important role in the development of multinational enterprises themselves, but also plays an important role in the bonding of cooperation between countries. However, the limitations of the traditional corporate law governance model, especially the limited nature of liability, make multinational corporations in the actual operation of many problems. Among them, the issue of responsibility sharing between parent and subsidiary companies is still one of the core issues that need to be continuously focused on at this stage, because the assumption of responsibility by parent and subsidiary companies not only has an important impact on the development of the international market economy, but also pays direct attention to the acquisition of creditor's interests. Through comparative research, historical research, and other research methods, the issue of responsibility-sharing among parent-subsidiary companies of multinational enterprises will be studied. The role of the corporate veil piercing system in responsibility-sharing will be analyzed based on domestic and foreign legislation and judicial experience. The aim is to identify a responsibility-sharing approach that promotes the development of multinational enterprises while safeguarding the interests of creditors.