According to reports, the mascot of the subway is named changchang, which means "cheerful, smooth and imaginative", which not only reflects the happiness brought by the Shanghai subway to the city and life, but also reflects the dense network and unimpeded development trend of the subway all over the city, symbolizing its infinite possibility of welcoming a diversified future.

In the cartoon image design, "changchang" is a dynamic teenager with red, white and blue as the main tone. Its helmet symbolizes technology and speed, and the subway logo on the helmet reflects the identity of the subway mascot. The mask is based on the subway cab, which represents the operating concept and also means "leading". Smiling eyes reflect the kindness and enthusiasm of Shanghai subway, which means smiling service and warm traffic. Chang Chang's raised arms and outstretched hands symbolize that the subway, as an important means of transportation in Shanghai, welcomes passengers at home and abroad with warm service; The feet represent the safety and comfort of Shanghai subway, and the wheels on the feet also symbolize technology and speed.

On February 4th, 20 10, on both sides of Xujiahui Station Channel of Line 1, the Shanghai Metro Culture and Art Corridor consisting of 14 light boxes was officially unveiled, which reflected the rapid development of Shanghai World Expo and Shanghai rail transit from a unique perspective.