Background: Marriage in young age is a very common problem in Egypt. According to Central agency for public mobilization and statistics in Egypt, Qena is the first government in early marriage by 12.8 per 1000 person. This indicates the great reproductive problem that faces women like unintended pregnancy and maternal mortality.   Objectives: Assessment effect of marriage age on contraceptives behaviors. Also, to identify other factors that can affect using of hormonal contraception methods like education, husband opinion about family planning idea and socioeconomic level.  Patients and methods: At family planning clinics of five primary health care units in Qena city this cross-sectional study was conducted on 400 married females in reproductive aged 15:49 years to detect relation between marriage before legal age (18 years) and practicing family planning. There are two groups, female married before 18 years and that married at or after 18 years. A structured questionnaire was used.    Results: There is a significant relation between marriage age and hormonal contraceptives use, about 73.2% of female included in our study use contraception methods and married after age of eighteen (p- value = 0.001). According to logistic regression analysis husband opinion is the most contributing factor associated with use of Contraception (p- value <0.0001) while the least contributing factor is husband education (P-value=0.064). Conclusion: Using of hormonal contraception was low among females married before age of eighteen so their family size is higher. Education plays a vital role in practicing family planning.