Anchorage structures are recognized as technologically advanced both at home and abroad, and their contribution to human engineering construction is enormous. However, there are still a number of unquestionable problems in anchored structures that need to be studied and solved. These problems constrain the reliable application and further development of anchored structures. The first problem is the interaction relationship between shear stresses at all interfaces of anchored structures and the design method. According to the data, the systematic research on the interaction relationship between shear stresses at all interfaces of anchored structures has not been reported at home and abroad, while for the design of anchored structures, the domestic and foreign technical standards have adopted the design method based on the average shear stress at the 2nd interface, which does not conform to the engineering reality and a large number of rigorous test results, but also makes the project potentially dangerous, and it is one of the important reasons for the frequent occurrence of engineering accidents, and it should be discarded.