In view of the problems of complicated geology,high accuracy requirements,difficult underwater operation and multiple construction processes in environmental dredging construction,we study construction progress simulation,ship dredging management,fine dredging reamer operation management,and sediment dehydration management,etc. Adopting the method of model segmentation,construction progress data,development application platform,we solve the problem of difficult management of such projects and apply it to the actual project. The results show that the application of BIM technology can strengthen and improve management methods and quality control in environmental dredging construction,which can provide reference for similar projects.