Manhole cover itself for the beautification of the city is very enlightening, now, the public not only pay attention to the level of urban construction, but also pay more attention to some of the details of the city service, urban humanized service has become an international trend. Humanized service is not a fashionable slogan, it focuses on the care and respect for the public, is a meticulous care of the details, but also "ready for the needs of the public" service, that is, what you want is what you get. The diversity of detail service is an important part of the service quality of a city, and also a cultural weight to reflect the cultural creativity of the city. At the foot of the manhole cover, but often reflects the details of the city's civilization, the meaning of manhole cover, not only safety, but also aesthetic symbol.