Open data provides raw materials for technology research and city innovation, facilitating the development of digital economy and smart city. International experience shows that, with the advancement of information and communications technology, there can be active and creative value-added re-use of open data by the community if it is made available in digital format. Developing applications which use, mesh up or integrate raw open data can tap community wisdom to bring convenience to the public, promote innovation, create business opportunities and even encourage entrepreneurship.