The invention discloses a straddle type monorail framework manufacturing method and a straddle type monorail framework. The method comprises the steps of transversely pushing a side beam module towards a positioned cross beam and an end beam till an end beam plug at the inner transverse side of the side beam module and the end beam are correspondingly plugged, and a cross beam plug at the inner transverse side of the side beam module and the cross beam are correspondingly plugged; welding the end beam, the cross beam and the side beam module to form a framework frame; welding upper supportinglegs of stabilizing wheel installing supporting legs to the bottom of the framework frame to form a framework body; enabling lower supporting legs of the stabilizing wheel installing supporting legs to be in bolt connection with the bottoms of the corresponding upper supporting legs to form the straddle type monorail framework. According to the method, the long stabilizing wheel installing supporting legs in the prior art are segmented and comprise the upper supporting legs and the lower supporting legs, the lower supporting legs are in bolt connection with the corresponding upper supporting legs, the integrated deformation amount of the framework is reduced, and the control difficulty of the whole size of the framework can be lowered. The framework adopts the step-by-step layered design structure, and the whole manufacturing difficulty of the framework can be lowered.