The prevalence of pediatric nephrolithiasis has increased in recent years in some countries located in the Afro-Asian stone-forming belt. The increase may be a result of rapid variations in eating habits and changes in socio-economic conditions. Geographic variation such as climate was reported to contribute to the incidence of urolithiasis in children. It seems necessary to do population based studies to find out the real prevalence of nephrolithiasis among infants and it should be quite important to investigate the association between dietary intake and nephrolithiasis.