Medical assistance fund is a serious illness medical assistance fund, which is used to pay the hospitalization expenses above the maximum payment limit of the basic medical insurance pooling fund of the insured.

Medical insurance refers to the basic medical insurance premium paid in full and on time by employers and employees according to the principle of compulsory social insurance through national legislation. If it is not paid in full and on time, the basic medical insurance fund will not pay its medical expenses regardless of individual accounts. Take the proportion of medical insurance payment in Beijing as an example: the employer pays 10% of its total payment base every month, and the employee pays 2% of his salary as a whole for serious illness+3 yuan.