This article combines the structural design of large unbonded prestressed culvert pipes in the Dongshen Water Supply Renovation Project, and conducts stress analysis and research on two types of prestressed anchoring schemes: ring anchor and counter anchor using three-dimensional finite element technology. The main analysis is to analyze the prestressed loss and prestressed effect under the two schemes, and comprehensively consider factors such as construction to establish a reasonable prestressed anchoring scheme, providing a basis for design