According to the current design field of high-head mixed chamber structure,taking the chamber wall of Liujiang Honghua Water Conservancy project as an example,we study the calculation method of anchor bar by combining with the finite element model of ADINA.The axial deformation of the anchor bar during tension is approximately proportional to the distance from the toe through the analysis of the ADINA finite element model,and we establish formula relation among axial tension of anchor bar,moment of anchor bar and the distance from the toe by the relationship between the axial deformation and the distance from the toe.To meet the requirement of stability against overturning in the chamber wall maintenance condition,according to the moment value of anchor bar,we derive the tension value.The tensile value of the anchor bar meets the design and application requirements,and the role of anchor bar becomes greater with the closer of the top row.The calculation method is relatively reasonable,accurate and more economical by comparing with existing methods of traditional anchor reinforcement.