The duration of medical insurance is not less than 25 years for men and 20 years for women. According to the information of "how many years of medical insurance", the insured is 60 years old for men and 55 years old for women, and the payment period for men is not less than 25 years, and that for women is not less than 20 years, of which the actual payment period for basic medical insurance premium must be not less than 15 years, and they can enjoy medical insurance benefits after retirement. If the minimum requirements are not met before retirement, the medical expenses of the actual payment period can be supplemented at one time. Medical insurance, referred to as medical insurance, is a social insurance system established to compensate workers for economic losses caused by disease risks. Medical insurance has the basic characteristics of social insurance, such as compulsion, mutual assistance and sociality. The state legislates and enforces it, requiring employers and individuals to jointly pay fees and establish a medical insurance fund. The medical insurance system is divided into basic medical insurance and commercial medical insurance. In addition, medical insurance also includes some other forms of medical insurance.