Documentation management system makes quality work intelligible, visible and searchable. Through training, employees can understand the importance of quality and the requirements for their work. ISO9000 provides enterprises with a scientific quality management and quality assurance methods and means, which can be used to improve the internal management level. Make the responsibilities of all kinds of personnel within the enterprise clear, avoid buck-passing, reduce the trouble of leadership. Can reduce all kinds of management cost and loss cost of enterprises, improve efficiency. Improve the image of the enterprise, increase the strength of competition. Can make the product quality get fundamental guarantee. Provide confidence to customers and potential customers. Meet market access requirements.