It has been proved to be effctive to promote the development of small and medium-sized enterprises in export though cluster.Small and medium-sized enterprises cluster has five big advantages: small and medium-sized enterprises cluster may greatly reduce the cost of products;it may form the competitive advantage in marketing through the uniform external sales promotion;it can enhance innovation ability of the enterprises;it is helpful to solve the bottleneck restricts of small and medium-sized enterprises in fund short because it is easier to attract the external investment;small and medium-sized enterprises cluster is advantageous to obtain the support of the government and is beneficial to the formation of export service system.