Mr. Ponkrit Phetharn, a 27-year-old,graduated from Thammasat University Lampang Center. After his graduation of bachelor's degree in social worker, he worked as a Mental health social worker at Sakaew Crown Prince hospital for 2 years. The target group of service assistance with individuals with multiple social, financial, emotional housing problems. There are six main duties for a mental health social worker. First, the social worker is social assessment and diagnosis of user data collected by interview and home visit to assess the data were analyzed. Second social treatment is a process to fix or alleviate social problems Spirit of service such as the family counseling and group therapy.Third, social rehabilitation is to prepare on the social adjustment and social networking support and participate in a social rehabilitation. Last community social work is helping users to be able to live in a community and a family, community insight acceptance and participation in care, including promotion and prevention of mental health problems in the community. One day of the Medical Social Workers also provide counseling services to individual patients and their families, provide support groups for patients or caregivers, collaborate with other social service provider agencies, link individuals to resources, and help restore individuals, families, and groups to successful social functioning. A major role of the Medical Social Worker is to be an advocate for the patient and, at times, an advocate for broader social causes. Medical social worker is responsible for the assessment study analyzed the social, mental, physical and social cause’s significant illness. The treatment, psychosocial rehabilitation, solve problem and social skill to patient’s families. Promotion service and prevent social problems that affect the health, both physically and mentally. Consulting advice to individual group and community in the normal state and a state of emergency, coordinate the operation and supply resources, social research, teaching, training, academic content production and development of appropriate technology. Summarize the patients can live like a normal person.Medical Social workers is to prepare with family and social support of the patients with the knowledge and understanding the changing attitude positive and the enhancement patients Social workers is to help them to help themselves. Social workers improve people’s well-being.The Medical Social worker is to build a holistic health is a body, mind and social good will result in a happy life.