Abstract: In order to create new germplasm resources and breed new varieties of Capsicum frutescens by irradiation mutation,dry and wet seeds of Capsicum frutescens were irradiated with different doses of ⁶⁰Co-γ,and explore the effect of irradiation on seed germination of Capsicum frutescens variety Zhongnongqianjinhong.The results showed that ⁶⁰Co-γlow dose irradiation had no obvious effect on germination ability（germination potential,germination rate）and germination index,but with the increase of irradiation dose,the inhibition effect gradually increased,and the germination ability and germination index showed a nonlinear decreasing trend.Each treatment was lower than the control（0 Gy）,and the radiation dose of dry seeds（25-3 000 Gy）and wet seeds（25-1 800 Gy）was negatively correlated with germination ability and germination index.The germination rate of dry and wet seeds was only half of the tested seeds at 1 800 Gy and 900 Gy,respectively.The germination rate was 0 at 1 800 Gy and 3 000 Gy,respectively.The daily germination rate of seeds increased first and then decreased,showing a trend of normal distribution curve.The germination rate T₅₀ of wet seeds increased faster than that of dry seeds.Dry seeds showed stronger radiation tolerance than wet seeds.