Urban green space is an important part of the urban ecosystem. There are some problems exist in the modern city such as green space gross inadequacy, maldistribution, low quality, and so on. Traditional measure methods of urban green space always fetch by the minority because of data acquisition difficulties and strongly professional. And most of them are representing the quantity, but the distribution. We proposed a concept of “Green Distance", and compared it to the traditional measure methods, pointed out the way of realization the livable “Green Distance", and how to using “Green Distance" to guide the planning, construction and management, and to improve the city"s environment and people"s life quality at last.