A cross-sectional study on 300 mothers, who had normal delivery at the Obstetric Department of Hung Yen General Hospital and their newborns was carried out from October to December 2003. The findings showed that: Average birth weight and birth length were 3,090 grams and 49.5 centimeters, respectively. The prevalence of low birth weight (less than 2,500 grams) was 9.7%. Pregnant women, who had the average weight gain of 8.48 kg would deliver newborns with low birth weight and lower level of Hemoglobin than those who had the average weight gain of 9.3 kg within pregnant period. Anemic mothers had a risk to have low birth weight newborns 16.5 times and anemic newborns 25.6 times higher than non-anemic mothers. Mothers, who were shorter than 145 centimeters had a risk to have low birth weight newborns 4.45 times and anemic newborns 1.84 times higher than those who were taller than 145 centimeters.