Using the national input-output table data from 2002 to 2017, this paper calculates the digital level of China's producer services from the perspective of the dependence of producer services on ICT industry, and analyzes its evolution law. The results show that the digital level of producer services in China shows a downward trend in the sample period. Although the structure of digitization of producer services in China is still in its infancy, its structural optimization trend is obvious. At this stage, leasing and commercial services, scientific research and technical services mainly rely on ICT manufacturing product factor investment to achieve digital development, while the financial sector is just the opposite. Whether from the perspective of dependence on ICT manufacturing industry or ICT service industry, the digital transformation of China's transportation, warehousing and postal departments pears underpowered.