A group company is a group company organized to act together for a certain purpose. It refers to an enterprise legal person consortium composed of members such as parent company, subsidiary company and holding company, with capital as the main link, parent company as the main body and group articles of association as the common code of conduct. Generally speaking, a group company refers to a large company with many production and operation institutions. It generally manages large-scale assets, governs many production and business units, and has its own rights and interests in many other enterprises.

There is no "group" in the company law, only limited liability companies and joint stock limited companies. However, in reality, we often see the name of a group company. In fact, this is just a company (or enterprise) alliance formed by the close relationship between several companies in business, circulation and production. In addition, some companies have diversified their business strategies and set up corresponding subsidiaries in many fields. In this way, the parent-subsidiary company will form an enterprise group because of this "blood relationship", which is quite similar to the group army in the army. These are the origins of the group companies we often talk about.

Listed companies are joint-stock companies.