In our work, we retrospectively studied 1270 cases of childbirth fetal macrosomia for a period of one year from 1st January 2014 to 31 December 2014 in the delivery room of the Souissi’s maternity CHU Ibn Sina of Rabat. • About 18470 births in 1270 were macrosomic, (a frequency of 6, 87%). The mean birth weight was 4346.45 + -354,83 grammes. • The highest rate was observed in parturients :  in the age bracket of 26-35 years with (49.13%).  multiparts (67,9%)  fats (45,4%)  having an antecedent of macrosomia (19,3%)  having an exceeded term (12,2%)  often involved in the genesis of the macrosomia diabetes was found in only 2.75% of cases