For the current research the records of 62 farms in Isfahan province were available. To estimate genetic and phonotypic trends of reproductive traits such as age at first calving, calving interval, open days and number of insemination rate the records of 63,866 cows including 167793 reproductive records were employed. Farms were covered by Vahdat industrial Agriculturists and Dairymen Cooperative of Isfahan during 1365 to 1391. Genetic parameters estimated by linear animal model using Restricted Maximum Likelihood Method (REML). Genetic and phonotype trends were estimated by using regression of average breeding values and phonotype values on calving year. Herd-year-season of birth and pregnancy days showed a significant affect (P 0. 01) on age in first calving. Parity, number of insemination, calving difficulties and days from calving to first insemination had a significant affect (P 0. 01) on calving interval. Parity and calving difficulties had a significant affect (P 0.01) on open days. Herd-year-season of calving, parity and season of insemination to pregnancy (P 0.01) showed a significant effect on number of insemination. Heritability of age at first calving (0.19±0.007), calving interval (0.06±0.005), open days (0.041±0.004) and number of insemination (0.071±0.004) were estimated. Phonotypic trends of age at first calving, calving interval, open days, number of insemination in first parity and number of insemination in second parity onward were estimated to be -3.48± 1.08, -0.41±0.4, -0.42±0.2, 0.013±0.0025 and 0.031±0.01 respectively. Observed trends for age at first calving, calving interval and open days were negative and favorable for reproduction traits. Numbers of insemination in first parity and number of insemination in second parity onward were positive and unfavorable for reproduction traits. Estimated genetic trends for age at first calving, calving interval, open days, for number of insemination in first parity and number of insemination in second parity onward were estimated to be 0.07±0.06, -0.56±0.5, -0.02±0.06, 0.0015±0.001 and 0.0005±0.005 respectively. Observed trends for calving interval and open days were negative and favorable for reproduction traits. Age at first calving, numbers of insemination in first parity and number of insemination in second parity onward were positive and unfavorable for reproduction traitsPhenotype and genetic trends of age at first calving had a different sign of slops which means these was a good managements system for this traits while there was not enough attention on genetic point of view. Key word: phenotype and genetic trends, age in first calving , open days, calving interval, number of insemination