Lower Respiratory Tract Infections (LRTI) incorporates all diseases of the lungs and the aviation routes beneath the larynx and incorporates croup conditions, bronchitis, bronchiolitis and pneumonia. Zinc has a major part in cell digestion, with significant consequences for the safe framework and the intestinal mucosa. The targets of this investigation were to look at the blood zinc levels in kids hospitalized with lower respiratory diseases with those of controls. This investigation is cross sectional examination in which we considered 150 Egyptian kids. 100 patients determined to have lower respiratory lot diseases and 50 of evidently sound Egyptian youngsters age and sex coordinated as control. This examination was done at benha showing medical clinic and benha college emergency clinic in the time frame from March 2019 to December 2019 and all information about these patients were overhauled from the documents. Every one of our patients exposed to the accompanying: Full history taking and positive history information will be thought of. Full clinical assessment and positive information in assessment were thought of. Examinations: CBC, CRP, Chest X Ray and Blood Zinc Level. There were measurably critical abatement in Zinc among Cases than Controls gathering. There was genuinely huge negative connection among's Zinc and RD grades. The kids with LRI had lower serum zinc levels than the control. There is a negative relationship between's serum zinc level and the evaluation of respiratory pain among kids with LRI.