The colonial history of Hong Kong created her own special culture,this kind of special culture can be found in many areas,including language,education,politics,justice and commercial sector. From the time when the economic opening of mainland China in 1978,the interaction and cooperation between mainland and Hong Kong have became closer and closer in the past few decades.And since handover in 1997,the change of migration policies of both governments(mainland and Hong Kong) leaded the growing number of mainland visitors to Hong Kong.Hong Kong commercial culture is therefore changed by the mainland visitors.In commercial sector,they also used to adjust their culture in order to adopt the needs of mainland visitors. This research is aimed to investigate the contemporary(visible) commercial culture of Hong Kong retail sale and catering sectors.Seeing whether their commercial culture has been adjusted to be an appropriate level in order to serve mainland visitors or not.Quantitative site-visiting and participated observation were used as research method.Test experiment would be done in tourist-concentrated areas and control experiment would be done in non-tourist-concentrated areas.Field research and several measuring indicators would be used to assess the commercial culture of those retail sale shops and restaurants.The function of control experiment,which would be done in non-tourist-concentrated areas,is aimed to compare and analyze the different commercial culture between tourist-concentrated and non-tourist-concentrated areas. Based on our data analysis,readers can know much about the contemporary commercial cultural change in Hong kong.Insufficient parts were noted and suggestions would be recommended to related official departments and Hong Kong commercial areas. In the time of the economic opening of mainland China in 1978, the Interaction and cooperation between mainland and Hong Kong have formed and closer in the past few decades. And since handover in 1997, the change of migration policies of both governments (mainland and Hong Kong) leaded the growing number of visitors visitors to Hong Kong. Hong Kong commercial culture is therefore changed by the mainland visitors.In commercial sector, they also used to adjust their culture in order to adopt the needs of the imported visitors. This research is aimed to investigate the contemporary (visible) commercial culture of Hong Kong retail. Sale and catering sectors.Seeing469 their commercial culture has been adjusted to be appropriate level in order to serve mainland visitors or not.Quantitative site-vi Siting and involved observation were used as research method.Test experiment would be done in tourist-concentrated areas and control experiment would be done in non-tourist-concentrated areas.Field research and several measuring indicators would be used to assess the commercial culture of those Retail sale shops and restaurants.The function of control experiment, which would be done in non-tourist-concentrated areas,is aimed to compare and analyze the different commercial culture between tourist-concentrated and non-tourist-concentrated areas.based on our data Analysis, readers can much less the contemporary commercial cultural change in Hong kong.Insufficient parts were noted and suggestions would be recommended to related official departments and Hong Kong commercial areas.