Abstract: Abraham Flexer questioned the specialization of social work in 1915 through the paper "Was Social Work Specialized?",and until now,development pattern in social work theory has moved from the pursuit of specialization to the reconsideration of specialization.The construction of social work theory system played more and more important role in the process——from experience-oriented to scientific.Now,development of social work in China had be appealed from the folk to the official,so discussion on development pattern in social work theory and its basic characteristic has much academic significance and realistic value.