As a national strategic pillar industry of tourism, it is very important to explore the innovation and integration of tourism industry in Bay area of Hangzhou Bay. Based on the economic data of seven cities in Bay area of Hangzhou Bay from 2003 to 2016, this paper establishes an index system for evaluating the competitiveness of tourism industry, uses the method of information entropy weight to determine the index weight, and uses the method of standard deviation and coefficient of variation to measure the development level of tourism industry in Bay area comprehensively. The results show that:(1) The competitiveness of tourism industry in Bay area has risen slightly over the past 14 years, and the ranking of competitiveness of cities has shown a stable trend, and the trend of integration is obvious. (2) The advantages of human tourism resources in Bay area urban agglomeration are obvious. It is necessary to reorganize, complement, innovate and integrate the tourism resources of each city in the region, and take “culture + science and technology” as the driving force to promote the transformation, upgrading, innovation and development of tourism products.(3) The tourism industry in Bay area should take resource endowment as its core competitiveness, strengthen the construction of ecological environment in the whole region, seek the upgrading and expansion mode of “pan-text tourism industry” with the help of information technology and regional excellent traffic conditions, economic basis and innovation ability, and realize the leap of “quality” of the competitiveness of tourism industry in Bay area.