Shanghai Metro, also known as Shanghai Rail Transit, is an urban rail transit system serving Shanghai, China. As of December 30, 2021, Shanghai Metro has opened and operated 20 lines and 508 stations, with an operating mileage of 831 kilometers, making it the urban rail transit with the longest total line length in the world. system. Before the outbreak of the new crown epidemic, the average daily passenger flow of Shanghai Metro was more than 10 million. In 2018, the passenger volume of the entire network was 3.710 billion ; the highest single-day passenger flow in history was 13.294 million. The Shanghai Metro is the main mode of transportation for Shanghai citizens in the city.

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