Abstract: Slab transform floor of the high-rise building is an important part of building, formwork supporting system is pivotal, because it has direct relation to the quality of engineering construction. By exploring the selection of model for R. C transfer floor fastener falsework, it is conducted a numerical analysis of stability capacity of falsework. The paper described the various bars on the falsework internal force distribution and the effect of bracing angle on the overall stability of the bearing capacity and preventive and improvement measures are also proposed. Which provides a pratical guide for design and construction of conversion layer on falsework, and a reference for similar projects.