Due to the complex structure of cable-stayed bridges, strict monitoring and control must be carried out during the construction process in order to make the actual construction state of the bridge close to the ideal state. This article takes the Jinwu Bridge in Jinhua City, Zhejiang Province as the research background. The bridge is an asymmetric single tower cable-stayed bridge, and the main beams on both sides of the tower have different spans and materials. During the tensioning process of the cable-stayed cables, the spatial effect of the main beams is significant and unbalanced moments are easily generated. Conduct research on tensioning schemes for cable-stayed cables. The research results show that compared to the one-time tensioning scheme of cable-stayed cables, the stress state and cable tension of the bridge are better when using the secondary tensioning scheme, which meets the requirements of construction monitoring.