The the difference of internal and external Human Resource Management(HRM) mode on the view of knowledge is researched. Some companies pay attentions to specific knowledge, which form internal HRM characterized by centralized management style character with wide job design, employee participation, and horizontal coordination. The others pay more attentions to general knowledge, which form external HRM mode characterized by dispersed management style character with narrow job design, specialty, and vertical coordination. Finally, the condition and application scope of these two different management modes are demonstrated.