This study was to examine what factors of Relationship marketing are in Korean, Chinese, Japanese, and American. The seven factors of relationship marketing consist of facilities/atmosphere, convenience, level of factors, customer-contact service, communication service, relevance of price, customer benefits. The empirical results and implications are as follows. First, the facilities/atmosphere, relevance of price in Korean restaurants convenience, level of food in Chinese customer-contact service, level of flood in American restaurants were high. Second, among activities of relationship marketing, facilities/atmosphere, convenience, level of food, relevance of price were significant higher in Korean restaurants than in others, and customer-contact service, communication a7vi7e, customer benefits were significant higher in American restaurants than in others.