8 masonry columns were strengthened by Sprayed Glass Fiber Reinforced Polymer (SGFRP), and the experiments of eccentric compression and axial compression were presented. The failure mode and strengthening effects of the masonry columns strengthened by SGFRP were discussed. The results showed that the bearing capacity of the reinforcing columns increased greatly. Comparing the bearing capacity of the columns when the thickness of SGFRP, the length of fiber and whether paste class fiber cloth are different, some reasonable reinforce suggestions are proposed. In addition, a calculation model was created based on the mechanical characteristics of the material of masonry, and the compressive bearing capacity formula is proposed combining the experimental research. The work investigated the effect of masonry columns strengthened by SGFRP quantitatively.