With the rapid economic development of our country and the comparatively continual depression of the world" s economy, most of the industries in China faces the austere actuality of the over-production and the supply-over-need market. And the domestic market has changed from sellers" market into buyers" market. So competition becomes very cruel and fury. Only those who know the market well and have the quick reaction can survive. Therefore, it becomes more and more important for the semi finished product enterprises to study the market, analyze the market and make a reasonable marketing strategy.Since the normal media is not very effective on this condition, then synthetic diamond factory, as the semi finished product enterprise, have to take cyber-marketing and international trade by building their cyber-marketing system to fight a way in domestic market. At the same time, synthetic diamond firm can also regular their selling and purchase flow with the system to cut back on the cost and make their product competitive.This paper discusses the development of online-marketing both in the domestic marketing and in the international marketing, and probes into cyber-marketing theory, and puts forward a framework of integrating cyber-marketing and traditional marketing. Focusing on the procedure of synthetic diamond sale and the obstruction of developing cyber-marketing of synthetic diamond in China, the article proposes the details and the procedure of the cyber-marketing system in our country. Also it makes a model about synthetic diamond cyber-marketing of a Chinese company. This articlecan be used for reference by other industries and products to promote marketing.