With the advent of the era of digital economy,the world has changed from"internet connection"to"Internet of Things",and the industrial structure and market demands have undergone drastic changes.More and more enterprises strive to grasp the trend of the times.By optimizing and upgrading the financial management mode and introducing information means to establish the financial sharing service center,securities companies have promoted the financial work efficiency to be greatly improved,centralized and informationized some repetitive and standardized matters,and improved the financial management efficiency.At this stage,there are still securities companies whose financial sharing service upgrade has not been included in the process of business digitalization,which limits the efficiency and effect of financial sharing service,fails to promote the digitalization of financial management and forms collaboration and support for business digitalization.Based on the overview of digital transformation,this paper expounds the concept of financial sharing service,analyzes the existing problems in the upgrading process of financial sharing service of securities companies at this stage,and puts forward targeted optimization strategies.