Abstract: The problem of separate governance of blue and green and construction of waterfronts are often faced when is concerned with urban planning and development. As an important part of urban landscape ecology, “blue-green space” has a great impact on the quality of human settlements. Based on the integration characteristics of blue-green space, this research has selected and constructed the blue-green space integration index evaluation system from three aspects: water body, biology and landscape ecology, and 5 criterion layers, 12 index layers and index weights were determined through expert consultation and the analytic hierarchy process (AHP). The integration degree of the blue-green space construction of typical rivers and lakes were evaluated by using AHP in Shanghai. The results showed that: (1) The average score of blue-green space fusion of the river system in the selected survey area was 70.575, and the artificial lake area was 65.774. Among the selected 8 river sample points and 8 lake sample points, the number of sample points has reached a high level of fusion was sample 4 and 6, respectively. The river system was healthier than the blue-green space around the lake area, the ecosystem was more complete, and the ecological service was more functional. (2) The blue-green spatial integration degree of the river system was mainly affected by the hydrological morphological characteristics (0.325) and the riparian zone (0.438), and the lake area was mainly affected by the water quality (0.480) and the hydrological morphological characteristics (0.454). (3) The differences in the spatial integration of blue and green in the selected rivers and lakes were mainly reflected in the two indicators of bank protection ecology and green accessibility. By evaluating the degree of integration of blue-green space, the problems existing in the construction of blue-green integration could be analyzed, which is expected to provide a reference for the planning and designing of urban blue-green space, and to give a theoretical basis for the restoration and management of urban ecosystems.