Antenatal Care is an effort to control pregnancy to find out the general health of the mother, to establish early the disease that accompanies the pregnancy, pregnancy complications determines the risk of pregnancy. The research objective was to determine the effect of preconception programs on K1 antenatal care based on age, education, parity. Cohort research design with a retrospective study approach. Sample 102 Trimester I and II pregnant women, divided into 34 people who participated in the preconception program and 68 people did not participate in the preconception program. Data collection was carried out by interview using a questionnaire. Data were analyzed by Univariate and Bivariate with Chi-Square test and stratification. The results of the age group <35 years (p = 0,000) age ≥35 years (p = 0.819). Low education (p = 0.004) higher education (p = 0.003). Primigravida parity (p = 0,000) Multigravida parity (0.158). There is a significant influence of age group <35 years who took preconception program to ANC (Antenatal Care) K1 on time and there was no significant influence of age group ≥35 years who took preconception program to ANC K1 on time, there was a significant effect of both low and high education on ANC K1 on time, there is a significant influence on primigravida parity on KC ANC on time and no significant effect on multigravida parity on KC ANC on time