The purpose of this study was to test the influence of the equilibration time on the frozen semen quality of duroc pig in modified tris-egg yolk with the addition of extracellular cryoprotectants. Semen is collected twice per week using massage methods from two duroc males aged ±2.5 years which in good health and have been trained in semen colection. The design used is a completely randomized design with 4 tests and 3 treatments T1: equilibration time of 1 hour, T2: equilibration time of 2 hours, T3: equilibration time of 3 hours at a temperature of 50C. Observed parameters were motility, viability, abnormality, MPU, and recovery rate (RR). The results showed that motility, viability, abnormalities, MPU, and RR were higher (P<0.05) at 2 hours of equilibration (25.63±3.15%, 55.86±5.41%, 4.92±0.53%, 56.69±5.64%, 36.61±4.49%) compared to 1 and 3 hours (20.00±3.54%, 39.28±9.89%, 7.93±0.76%, 40.21±9.39%, 28.57±5.05%) and (15.00±4.08%, 32.19±7.0%, 8.41±0.70%, 32.71±7.07%, 21.43±5.83%). It was concluded the motility of duroc pig spermatozoa in the tris-modified diluents after 2 hours of equilibration reached 64.375% and 25.63% post thawing, but did not reach the requirement of 40% spermatozoa motility for artificial insemination. It was concluded that the sperm motility of Duroc pig in tris-modified diluent after 2 hours of equilibration reached 64.375% and 25.63% post thawing, but did not reach the standard of 40% spermatozoa motility for artificial insemination.