We studied the influence of cross-linking agent content on the mechanical and tribological properties of gamma-irradiated plant-derived polyamide 1010 (PA 1010). Cross-linking agent (TAIC), in which triallyl isocyanurate is impregnated in calcium silicate, was used. PA 1010/TAIC samples with TAIC content of 1, 2, 3, 5 and 10 wt.% were prepared in this study. PA 1010 and PA 1010/TAIC were kneaded using a twin-screw extruder and injection-molded. These specimens were then irradiated with gamma-ray in air with doses of 20 kGy. After gamma-irradiation, the specimens were heat-treated to remove the free radicals generated in the polymer. Mechanical properties such as strength, modulus and hardness of PA 1010 improved in line with higher TAIC content. Moreover, the storage modulus, glass transition temperature, and cross-link density of gamma-irradiated PA 1010 increased in line with higher TAIC content. On the other hand, the crystallization temperature, melting temperature and degree of crystallinity of gamma-irradiated PA 1010 decreased significantly in line with higher TAIC content. These effects may be attributed to change in the internal microstructure (formation of cross-linking structures, change with crystalline and amorphous phases) due to the gamma-irradiation and TAIC content. The degree of dependence on the amount of TAIC addition differed between the frictional coefficient and specific wear rate of PA 1010, and dependence on the amount of TAIC addition varied according to whether or not there was gamma-irradiation. Especially, the specific wear rate of gammairradiated PA 1010 displayed a minimum of 2 wt.%.