The San Francisco Bay Area is the benchmark for the development of information technology and digital economy in the world. The area is teeming with industry giants and provides superior innovation environment. In recent years，it has maintained a high economic vitality. This report summarizes the development of the digital economy in the Bay Area in 2017，analyzes the sources of its industrial competitiveness，and lists the five major digital economic events in the Bay Area in 2018. Some of the data are compared with the development level of China or Shanghai in the same period，with a view to the relevant regional figures in order to provide practical inspirations for future economics research.