Based on field research and in-depth interviews，the paper makes comparisons between African merchants and Korean merchants in Guangzhou. The historic background of immigrants and structural factors of Guangzhou including foreign trade，supply-side structural reform，immigrants management policy and the mainstream of social structure that exert different effects on two immigrant groups are discussed firstly. Traders from Africa and South Korea both form their community as business and living zone and interact with the local society. The patterns of integration and segregation with local community practiced by African immigrants and Korean immigrants vary due to differences in social and economic background，ethnic characteristics，social space and activity. Finally，the conclusion and relevant suggestion are proposed.