Based on incomplete information of urban landscape greening level system, grey comprehensive evaluation model is set up, entropy method combining with subjective experience and objective data is used to calculate indicator weights, and every year construction level of Chongqing’s landscape greening situation is evaluated. The evaluating results can objectively and truly reflect the empirical situation of the landscape greening level of Chongqing, can help to understand the status quo of the greening construction and can explore better way to conduct greening construction.