Based on the traditional culture of China, the informal organization has a strong presence in China's retrospective. In modern times, lacking a sense of belonging to the enterprise, informal organization widely exists in the modern enterprise in various forms. Today companies are aware of the significant role and impact of informal organization, They are trying to find the right way to guide the informal organization to better serve the goal of enterprise and avoid the negative effects of informal organization which can promote the development of enterprises, and improving the management of enterprises, It is also the focus of a growing business concern in today's enterprise. Informal organization was first found from the United States. The management expert Mayo made the "Hawthorne experiment" and found that there is always one or more small groups in the formal organization, these small groups are based on many factors such as the same point of view, similar experiences and equivalent status. Those people formed groups unconsciously and spontaneously. Informal organization is not a formal organization. It has no definite injunctions, regulations and the Articles of Association. Those same things they have in common that bring them together. It is sustained completely by their good relationships between the members of informal organization. Look around, the informal organization has developed into a force in the enterprise which should not be underestimated. This force can be positive or negative, Informal organization is not only the opportunity of enterprise but also the challenge of the enterprise. As we all know, the methods and means of management used properly can make the enterprise more effective and the poor use make the corporate perceptibly. Just as a Chinese old saying goes 'who made it who ruined it.' Normal production and operation of enterprises also largely depend on the presence of informal organization. Therefore, the understanding and management of informal organization is urgently needed.