Radiation effect of PA610 with polyfunctional monomer-trially isocyanurate (TAIC) was studied.The results showed that crosslinking effect of EB radiation on PA610 is obvious.After the PA610samples were radiated by EB, dosage 75kGy, the physical characters of PA610 materials were greatly improved,especially their tensile strength being increased about 18% and their impact strength about 50%,but their water and lubricant absorption were decreased. So, EB radiation can enhance PA610 materials physical strenth,resistance to solvents and water and increase their thermal-deformation teperature.