Based on two and a half years of fieldwork in China, this book examines the cultural genesis and social mechanisms of stigma related to mental illness and HIV/AIDS in China. It also explores the bio-politics on stigma through detailed description of social exclusion experienced by people suffering from mental illness or HIV/AIDS and by systematic comparison on stigma between the two illnesses in the Chinese context. Through the comparison, this book describes the micro socio-dynamic process of stigmatization in the local Chinese context, highlights the identity transformation accompanying the illness trajectory the patients and their families have lived through, and ultimately connects Chinese society and its community-centered social value system and institutional arrangement to the stigma associated with mental illness and HIV/AIDS.