Parental imprisonment tends to result in family predicament, causing changes in family and social environment that would bring serious psychological pressure to children. Based on the health ecological model, using the data from “Research on the Health Status of Children in Difficult Families” to analyze the impact of parental imprisonment on children's mental health from the perspective of family and social environment. The study shows that mental health status of children of prisoners is significantly worse; and family environment, social interaction and social bullying are important affecting factors. Compared with ordinary children, mental health of children of prisoners is more susceptible to negative events such as abuse by their caregivers and bad social interaction. Therefore, in addition to family environment, it is necessary to create a good social environment to reduce prejudice and discrimination against these children, to improve their growth environment and promote their physical and mental health development.

HIV cases involving older people aged over 50 years have increased rapidly in China.Having sex is the major mode of HIV transmission.This study,using qualitative and quantitative data,investigates HIV risk and the sexual network among the elderly clients in the low price sex industry in a border county in Guangxi Province.Observation,interview,and questionnaire survey are conducted,and HIV,syphilis,hepatitis C test are applied.40 sex workers and 108 clients are involved in the research.There is a stable sex network among clients and sex workers,and the elderly clients are under HIV risk by the sex network.