Based on identifying socioemotional wealth (SEW) of Chinese family firms as family control, family members' identification with the firm, conservation of social capital, and the vision of family generational succession, this paper empirically tests the impact of the preservation of SEW on network strategy of family firms, also examines the mediating effect of partner identity in this relationship using the data of manufacturing family firms in Zhejing and Chongqing. First, we find that family control negatively influences centrality, density and intensity of network, but positively influences duration of network; family identification positively influences density of network; conservation of social capital positively influences centrality and intensity of network; the vision of family generational succession positively influences centrality and density of network, but negatively influences duration of network. We also find that partner identity mediates the relationship between the preservation of SEW and centrality, density and intensity of network in Chinese family firms.