Abstract: Taking 105 tomato germplasm resources as test materials and the resistance gene molecular marker assisted screening method was used to investigate the distribution of 8 resistance genes, included Mi-1,I-2,Cf-9,Ph-3,Ty-1,Ty-3,Tm-2^a and Sw,in 105 germplasm resources, in order to provide reference for the development of resistance gene polymerization breeding.The results showed that 28 materials contained Mi-1,60 materials containing I-2,80 materials containing Cf-9,34 materials containing Ph-3,19 materials containing Ty-1,11 materials containing Ty-3,47 materials containing Tm-2^a,and 7 materials containing Sw.Among 105 tomato materials, 3 tomato materials did not contain any resistance gene.There were 78 materials containing less than 3 resistance genes, accounting for 74.3% of the total materials.There were 9 materials containing 4 resistance genes.There were 11 materials containing 5 resistance genes.There were 6 materials containing 6 resistance genes, namely XIHJ-21-27,DT-27-43,722-ZT77,722-ZT79,494,495.One of the materials containing 7 resistance genes was XLJ-226-41.No tomato material containing 8 resistance genes at the same time was detected.