Compared to the "4P" traditional marketing theory, the great marketing theory has two obvious characteristics: it attaches great importance to adjusting the relationship between the company and all external aspects, so as to eliminate obstacles from the people and open the channel of product market. This requires that companies analyze and respond to the needs of the target customers, at the same time they must study resistance from all aspects and formulate countermeasures, which largely depend on the work of the public relations to be completed. Break the traditional line of demarcation between environmental factors.This means that it breaks the uncontrollable factors of the marketing environment and includes the marketing environment and its role. Some environmental factors can be modified by influencing the various activities of companies or by using the power of dredging relationships.