The bottom fund of medical insurance is not the money of the year. The medical insurance fund refers to a certain amount of funds injected into the medical insurance fund by the central or local governments under the supervision of the medical insurance fund to support the balance of payments of the medical insurance fund. When the funds raised by the medical insurance fund are insufficient to pay the medical expenses of medical insurance personnel, they can be supplemented with the bottom funds. The bottom of medical insurance usually comes from government budget allocation, especially the central government's subsidy for medical insurance. The bottom fund is usually carried out in a cycle, for example, it is generally divided, used and supplemented in years. Therefore, the bottom fund of medical insurance is usually not the money of the year, but the fund reserve established, maintained and updated by the government for a long time.