The author of this paper takes a typical practice case, by adopting the theoretical frameworks by APSAC, Glase, and Doyle and Timms, to analyze the abuse behaviors existed in the case, such as abandoning, belittlement, improper treatment, unreasonable emotional response, and confinement, and to look into the psychological abuse process. By employing the case study and child abuse prevention in western countries, and taking into account the independence and intergrowth in psychological abuse process, this paper concludes that the fulfillment of children’s need should be the focus for the overall objective of child abuse prevention, so as to make policies and construct service systems. The main intervention strategy lies in risk factors control, protection factors integration and the construction of the Three-level prevention system. Moreover, classified intervention path ought to be adopted, so as to amplify the advantages of social work in resources integration, relationship coordination and service delivery, accelerate the development of child abuse prevention and build a child-friendly society.