Thanks to the advantages of convenient construction, reliable reinforcement effect and obvious eco- nomic benefits, the method of pasting steel plate reinforced concrete beams has been widely used in the field of structural reinforcement and engineering transformation. A new construction process was adopted in the experi- ment: by adding quartz sand to the glue layer, the three factors of steel plate thickness, rubber layer thickness and quartz sand thickness were combined. The representative experiment beams which were loaded were deter- mined by orthogonal test method, and then the interface stress of the steel plate on the bottom of the concrete beams was analyzed. The results show that the addition of quartz sand in the glue layer contributes to the effec- tive transmission of interfacial stress, so that the steel plate can fully exert its effect. Finally, suggestions are proposed for the dosage of quartz sand in practical engineering application.