The load compensation equipment for anchor cable named low retraction prestressed anchorage sys-tem with twice-tension (referred to as twice-tension anchorage system) is proposed in the paper. Calculation re-sults of loop anchorage prestressing loss (PL) values of inner lining(IL)in Yellow River-crossing tunnel under two anchorage systems,including twice-tension anchorage system and HM(Chinese transliteration is huan-mao)anchorage system,are introduced. The software ANSYS is selected to realize the three-dimensional (3D) finite element modeling to accomplish simulation and calculation works under the two anchorage systems,re-spectively. Stress processes of IL under the two working conditions,of which one is completed cable tensioning (CCT) and the other is water in the tunnel with the designed water pressure (DWP),are contrasted and ana-lyzed. Impacts of prestressing forces of anchor cables on structural safety under the two anchorage systems are contrasted. The calculation results show that the twice-tension anchorage system can reduce PL effectively and then increase prestresses of wall concrete(WC). Meanwhile,the anchorage system has the advantages of im-proving security and stability of tunnel structure,reducing project costs and saving steel consumption. The re-search work is available to related design and construction of anchor cable,and is worthy of promotion and ap-plication.