Abstract: The aim of this cross-sectional study was to determine the under five children regarding protein energy malnutrition. Protein-energy malnutrition (PEM) is a public health problem and is associated with high morbidity and mortality. The study was conducted at Rajshahi Metropolitan city of Bangladesh; a 1356 Mother’s which is located in Rajshahi, Bangladesh. The study was carried out from January 2020 to December 2020 in Rajshahi Metropolitan city of Bangladesh. It is likely that mothers who are in admitted their children in hospital for treatment in pediatrics words under 1356 mother’s 14% are10-19years, 58%are 20-29years, 20% are 30-39years, and 8% are 40-49 years. Mother’s educational status 10% are illiterate 54% are up to class v, 30% are up to class vi-xii, 6% are Graduate and above. Among them 86% are house wife, 8% are govt. service, and 6% are teacher.46% are lower class, and 42% lower middle class, 10% are upper middle class, and 2% are higher class. Among them 86% are Muslim, 10% are Hindu and 4% are Christian. According to the data collection the respondent’s home location 32% comes from urban and 68% comes from rural. Finally the study might be held to carry out further in-depth study in this regard.