Objective: The paper analyzed the specific demand for commercial health insurance of middle-aged and elderly population in Gansu Province under the background of aging discussed the supply problems of commercial health insurance at present, and put forward countermeasures and suggestions. Methods: The study analyzed the data in statistical yearbook. EpiData3.1 was used to establish the database and double entry was performed. SPSS25.0 software was used to conduct descriptive analysis, correlation analysis, single factor χ² test and multiple response cross-table χ² test. Results: χ² test was used to analyze the satisfaction with their own health conditions (χ²=19.237) and the satisfaction with the basic medical insurance (χ²=34.691) (P<0.001). The four reasons why they do not buy health insurance were tested by a multiple response cross-table χ² (χ²=90.623).,The progressive significance (bilateral) was 0.00, which was statistically significant. Conclusion: At present, the actual and potential demand for commercial health insurance for the middle-aged and elderly people in Gansu Province is relatively high, however, there are problems in the actual supply of commercial health insurance. It should be improved from the aspects of designing and enriching the types of commercial health insurance, and strengthening the connection between medical institutions, insurance companies and insured groups.