Abstract: The integrity and seismic performance of brick masonry made of bricks and mortar with low strength and obvious brittleness are poor.Embedding carbon fiber reinforced polymer (CFRP) plates with high strength and high modulus into horizontal mortar joints can significantly enhance the integrity and mechanical properties of brick masonry.In order to study the effect of embedding CFRP plates in the horizontal mortar joint on the bending tensile performance of brick masonry,7 groups of 21 brick masonry specimens were designed considering the caulking spacing and the width of CFRP plates,and the bending tensile tests along the tooth joint section were carried out.The typical failure modes of the specimens were summarized and analyzed,and the peak bending moment,ultimate deflection and bending tensile strength of the specimens were compared.The test results show that the reinforcement method has an obvious effect on improving the bending tensile performance of brick masonry.The maximum increase of strength and bending moment is up to 900%,and the maximum increase of deflection is up to 450%.The role of CFRP plate in the loading process is obtained through the strain analysis of the embedded CFRP plates,and the formula for calculating the bending tensile strength of the strengthened masonry along the tooth joint section is established based on the formula in the design code of masonry structure.The calculation formula is in good agreement with the test results.