In the event of an earthquake occurring in steel Frames structures, if the lateral load-resisting system is a moment frame structure, these beams will dissipation of energy and developed plastic hinge in the beam, but this requires a strong connection that must be made in the design of the structure. A zone of beam and column connection exposed to flexural and shear stresses. This zone is considered as a sensitive area of the bending frame; if this area does not do its job properly, the transmission of force between the beam and the column is not properly executed and the structure will be damaged seriously. The reputable regulations of the world have considered certain criteria for this area and they are called connection springs. In this study, four models were designed to examine the force mechanism of this section and the behavior of this part is investigated. Contrary to expectation, a huge share of the cut is transmitted in scarves and underpants. In the next step, a model is designed to give the source of the connection a surrender. In this case, the shearing sheet transmits a negative cut into scarves and cufflinks.