Abstract: In our report, in order to solve the failure of the traditional steel-wood composite beam due to the instability of the web and the shortcoming that the bearing capacity cannot be effectively utilized, a full-foot double-belt steel-wood composite beam（hereinafter referred to as "omposite beam"） was designed and manufactured. Firstly, the monotonic static loading test was performed to determine the bearing capacity, deformation capacity, and failure characteristics. Secondly, based on the obtained results, the ABAQUS finite element software was used to analyze the key factors affecting the bearing capacity and deformation of the composite beam. Lastly, the calculation formula of the mid-span deflection of the composite beam was derived based on the experimental and finite element simulation results. The results showed the composite beam has high bearing capacity and good ductility deformation characteristics, which meets the requirements of engineering application. With the increase of steel plate thickness, the bearing capacity of composite beam increases, however, the degree of improvement is limited. With the height of the web increases, the increase of improvement is significant. The calculated cross-center deflection formula calculation result has less error with the experimental value, and can be used as a reference for solving the mid-span deflection of the composite beam.