The construction of landscaping projects based on urban relocation sites is an important means to solve the shortage of available green space in high-density urban areas. A multi-index evaluation system for the comprehensive benefits of landscaping projects based on urban relocation sites is constructed. In the 8th year after the construction of World Expo Park in Shanghai, From the aspects the environment, society, economy, and landscape benefits, the multiple benefits produced are systematically and comprehensively evaluated. The results show that the Expo Park has more outstanding individual benefits in coping with climate change, reducing soil pollution, increasing biodiversity and the rich color and seasonal appearance of the plant landscape; There is still room for improvement in individual benefits in hydrological control, air purification, heat island effect mitigation, leisure and recreation, and accessibility. Expo Park’s comprehensive benefit index is 70.98. The evaluation result is at the good level, reflecting that this park’s green space based on urban relocation sites has good sustainability and achievs the expected effects of the project planning and design. Among the four aspects, the landscape benefit evaluation result is the highest at 94.62; the environmental benefit is the second at 73.23; the social use is followed closely with the evaluation result at 60.00; the economic benefit is relatively low, at only 39.60. The research can provide a reference for evaluating the construction effectiveness of landscape projects based on urban relocation sites ,so as to improve the individual and comprehensive benefits and promote the sustainable development of such Projects.