bet365 live casino games Random control test is widely regarded as the golden rule of social work intervention。but，Due to the number of intervention objects、Implementation specifications、Conditions of Quality Evaluation Tools，Ethical requirements for social work，Social work intervention in real situations is often difficult to achieve strict random control tests。Based on a "let us be friends -Hebei" intervention project implementation based on a "let us friends -Hebei" intervention project based on the development of the whole process of the implementation of the process of implementing，In the case where the random control test is limited，You can design in the intervention plan、Evaluation of intervention implementation and intervention effect selection non -random intervention strategies，These superior strategies also show a relatively obvious intervention effect。other，In the field of social work service，Statistical significance and clinical significance should be the core standard for measuring the effect of intervention。

　　Keywords:Random control test Social work intervention in children's active behavior development "Let us be friends"

Author Wu Fan，Professor of Social Work and Social Policy of Nankai University; Yan Hao，Chinese University of Hong Kong -Assistant Researcher at the Joint Research Center of Social Policy of Nankai University。(Tianjin 300350)