The main functions of the GDA are as follows: 

Promotive Functions: Health promotion is the process of enabling people toincrease control over health related problems and to improve health. It is not directed against any particular disease, but is intended to strengthen the host (client) through a variety of approaches such as health education, environmental modification, nutritional support, lifestyle and behavioural changes. The GDA has to educate the client on various aspects of health and nutrition. The GDA provides information about health, treatment or therapy and lifestyle changes. 

Preventive Functions: It includes supervision of pervasion of normal pregnancies and childbirth, supervision of normal growth and development of children, control of communicable diseases, prevention of prolonged illness, provision of health education services, occupational health services and preventive healthcheckup.

Diagnostic Functions: The GDA helps the patient and health professional in inpatient services involving medical, surgical and other specialties and specific diagnostic procedures

Emergency Services functions: The GDAassists in emergency services required for dealing with accidents, natural disasters, epidemics, etc. as per the instruction of the healthcare team members.

Caregiver: A GDA meets the client‘s holistic healthcare needs to promote health and the healing process. The GDA provides treatment for specific disease and applies measures to restore the emotional and social well–being of the client