Tourism integration is an important part of Yangtze River Delta integration，and high-speed rail tourism is an important way to promote the development of Yangtze River Delta tourism integration. With the continuous improvement of the high-speed rail network，the trend of “high-speed rail + tourism” has gradually infiltrated into the integration process of the Yangtze River Delta. In the new era，the operation status of high-speed rail in the Yangtze River Delta region keeps improving，and the overall development level takes the lead in China. The development of high-speed rail tourism also presents a relatively vigorous momentum. Based on the good social environment in the Yangtze River Delta region，the development potential of high-speed rail tourism is huge，but there are still development differences within the region. Based on the analysis of the characteristics of the current high-speed rail tourism market，this report puts forward some suggestions on how to seize the development opportunities of high-speed rail tourism in the Yangtze River Delta region in terms of product characteristics，service facilities and product portfolio.