Adverse childhood experiences (ACEs) are now recognized as a serious public health issue. Common ACEs include childhood abuse and neglect and household dysfunctions (e.g., family violence, household substance abuse, mental illness in household). The negative outcomes of ACEs have been well-documented in the literature. Not only are ACEs closely related to many mental health and behavioral problems (e.g., depression, psychosis, suicide, HIV high-risk behaviors, substance abuse, criminality), but also related to a lot of physical health problems, including diabetes, obesity, heart disease, cancer and stroke and so on. Experts even suggested that ACEs are the most preventable cause of severe mental disorders and HIV high-risk behaviors and that ACEs can lead to many leading causes of death (The Childhood Adversity Narratives, 2015). The economic and societal costs of ACEs are also very huge. Therefore, child protection has become a very important strategy to prevent many physical and mental health problems in our society from a public health perspective.