Black spot (Alternaria sesami) and capsule rotten (Alternaria alternata) of sesame is one of the most important diseases in filed production, which seriously affects yield and quality of sesame. The identification and evaluation of sesame germplasm resistance to both diseases were carried out by artificial inoculation in the field, which provided scientific basis and technical guidance for sesame disease resistance breeding and field disease control. From 2020 to 2021, the 84 sesame germplasm resources were evaluated for resistance to capsular rotten (A. semami) and black spot (A. alternata). The results showed that among 84 sesame germplasm resources, 12 were resistant to black spot (R), accounting for 14.29% of the total identified resources; 25 were moderate resistant (MR) resources, accounting for 29.76% of the total; 34 accessions were susceptible(S), accounting for 40.48% of the total; 13were highly susceptible (HS) resources, accounting for 15.48%; No high resistance (HR) to sesame black spot was found. Among 84 sesame germplasm resources, six resources showed highly resistance (HR) to capsule rotten disease, accounting for 7.14% of the total; 26 were resistance (R) to capsule rotten, accounting for 30.95% of the total; 31 were moderate resistance (MR), accounting for 36.90% of the total identified resources; 17 resources showed susceptible(S), accounting for 20.24% of the total; 4 resources showed high sensitivity (HS), accounting for 4.76% of the total. Five sesame germplasm resources, i.e. ZM02, ZM11, ZM21, ZM60 and ZM77, were identified as resistant to disease of both black spot and capsule rotten . It was found that there were significant differences in the number of resistant sesame germplasm resources for black spot and capsule rotten, and the number of resistant resources for capsular rotten was significantly more than that resistant black spot.