In the process of multi-professional collaborative design of pump-sluice project,the application of BIM technology can improve the management level and production efficiency of the design project,so that the project can be greatly improved in professional communication,collaborative design,cost management and other aspects.This paper takes large pump-sluice engineering as an example,closely combined with the construction site,it has been fully applied in multi-disciplinary collaborative design of complex projects accurate control of pile foundation based on three-dimensional geological model,optimization of engineering layout,rapid statistics of engineering quantity,rapid drawing of three-dimensional reinforcement,simulation of equipment assembly,and development of construction and management platform.This study achieves digital design and delivery,then puts forward some understanding and experience of the application of BIM technology.