Background: Survival depends on the newborn baby's capacity to adjust to the extra-uterine environment. When a baby is born, significant physiological changes occur in all of the body's systems. The development of the lungs may be the one adaptation that is most important for survival. The placenta and umbilical veins give the foetus with oxygen and nutrients continuously, and the mother circulation controls the expulsion of carbon dioxide. The neonate begins extra-uterine gas exchange by filling the airways with air at the first gasp just after birth. Currently, clinical indicators plus a simple chest X-ray are used to diagnose neonatal respiratory illness (CXR). Objectives: The purpose of the thesis was to demonstrate how lung ultrasonography can be used to assess newborns' respiratory distress. Patients and methods: LU Sex amination for one hundred neonates (according to statistical role) using GE logic e ultrasound with linear probe done at Benha university departments of pediatrics and radiology. Results: Based on lung US, the most common diagnosis was pneumonia in 30% of cases followed by TTN in 26%, RDS in 18%, pneumothorax in 14%, and meconium aspiration in 7% and pulmonary hemorrhage in 5%. RDS was categorized into RDSI in 2%, RDSII in 3%, RDSIII in 13% . Conclusion: LUS is a safe, non-invasive technology that can be used to diagnose neonatal Respiratory diseases , monitor the effectiveness of treatment, and minimise the need for X-ray procedures.