The utility model discloses a balanced type elbow form flexible connecting pipe, which is a pipeline flexible connecting piece taking the 90 degrees bending structure. The balanced type elbow form flexible connecting pipe can keep the shape constant under the function of the working pressure of the fluid in the pipe. The balanced type elbow form flexible connecting pipe is composed of a pipe body and joints on both ends of the pipe body; the joint can be the rubber pipe joint such as swaged type structure, three-flange structure, etc. The pipe body is composed of an inner glue layer, a skeleton layer and an outer glue line; wherein the skeleton layer is a twining layer formed by twining the angle calculated by a fiber curtain line according to the balance. The twining layer is provided with the intercrossed longitudinal twining layer and circular direction twining layer. The balanced type elbow form flexible connecting pipe can be used as the flexible connecting piece of the alter direction section of the vertical angle of the pipeline system to ease the force and the bending moment generated by the factors such as the heat expansion in the pipeline system and make the compensation for the displacement of the pipeline on three freedom directions due to the vibration function and the impact function. The balanced type elbow form flexible connecting pipe has excellent balance, and can keep constant under the function of the working pressure of the fluid in the pipe and in the cases that the axial deformation is small, and the bending deformation in the surface or out of the surface approaches the zero.