On the calculation of bending moments of bracketed structures, various results of investigations based upon the consideration that bracketed beams were regarded as beams with variable sections have been published. The author applied the theory of the wedge in bracket parts, obtained various formulas on bracketed beams and showed the method of the calculation of bracketed structures by introducing above formulas into the slope-deflection method. In this case, the joint rotation due to shearing forces at bracket ends were considered, and it was shown that the effect of the shearing force in the joint rotation can not be neglected in the unsymmetrical structure.