Based on the operational data of economy and finance of Sichuan in the previous three quarters of 2017，this article has made analysis and prediction of the trend of financial sector and main operating entities including commercial banks，capital market，insurance institutions in Sichuan during 2017-2018 adopting methods of historical data analysis and investigation analysis. In 2018，under the influence of such overlay factors as financial disintermediation，unsolved problems and technological upgrading，commercial banks in Sichuan will further deepen the adjustment of industrial structure and assets-debts' structure. That is to say that the development of commercial banks is facing uncertainty. Due to the low interest rate，the insurance industry has developed rapidly. Under the policy of strengthening security function supervision，the development of property insurance and accident insurance have accelerated significantly while the growth of health insurance and life insurance continues to slow down. Although the capital market is developing at a slow pace，relying on a series of policies of the 19th National Congress of CPC and General Office of Sichuan Provincial People's Government，the prospect should be promising.