Nursing mainly studies the basic knowledge and skills of human physiology and pathology, basic medicine, clinical nursing and preventive health care, and carries out clinical nursing, community nursing and rehabilitation health care in hospitals, community health service centers and nursing homes at all levels. For example: daily cleaning care for patients who can't take care of themselves, postpartum care for newborns and parturients, health care and disease prevention for the elderly, and publicity and popularization of health knowledge.