Railway wagon process knowledge sharing method, group server and system

The invention provides a railway wagon process knowledge sharing method, a group server and a system, and the method comprises the steps: creating a shared process database, and creating shared process data in the shared process database; when the subsidiary company needs to quote the target process data, receiving a data identifier of the target process data sent by the subsidiary company server, and searching the corresponding target process data in the shared process database based on the data identifier so as to be quoted by the subsidiary company server; therefore, the shared process database is created in the group server in advance, and the shared process data is created in the database, and since the sub-company server and the group server can perform data communication, when a certain sub-company needs to produce a certain product, whether the corresponding shared process data exists in the shared process database or not can be searched, and the production efficiency is improved. And if yes, the proc