Mục tiêu: Nghiên cứu nhằm mô tả thực trạng nuôi con bằng sữa mẹ của các bà mẹ có con dưới 2 tuổi và một số yếu tố liên quan. Đối tượng và phương pháp: Nghiên cứu mô tả cắt ngang được tiến hành trên  232 bà mẹ có con dưới 2 tuổi tại xã Đoàn xá, huyện Kiến Thụy, Hải Phòng. Kết quả: 97,8% bà mẹ hiểu được sữa mẹ có đủ năng lượng và các chất dinh dưỡng...

English summary: Objective: The study aimed to describe the situation of breastfeeding of mothers with children under 2 and some related factors. Methods:  A cross-sectional survey was carried out on 232 mothers with children under 2 years old in Doan Xa commune, Kien Thuy district, Hai Phong. Results: 97.8% of the mothers understood that breast milk had adequate energy and nutrients needed for the development of children in the first 6 months. 89.2% of the mothers knew that colostrums contained many antibodies. 70.7% of the mothers understood the best time to wean infants when they are healthy. The proportion of mothers who breastfed their babies within 1 hour after delivery was 55.2%. There were 20.2% of mothers exclusively breastfeeding during the first 6 months. The proportion of exclusively breastfeeding mothers with more than 4 months of maternity leave was 2.47 times higher than those with less than 4 months off. The proportion of exclusively breastfeeding mothers who expressed breast milk before going to work was 6.38 times higher than the mothers did not. Conclusion: The proportion of mothers with good knowledge on breastfeeding was relatively high; the proportion of mothers with good breastfeeding practice was at average and low level, with 55.2% of mothers with early breastfeeding initiation; and 20.2% of exclusive breastfeeding in the first 6 months. There was a relation between exclusive breastfeeding in the first 6 months and maternity leave, as well as milk expression practice.