This study evaluated the relation between toxocariasis and asthmatic bronchitis children in pediatric outpatient's clinics of Zagazig University Hospitals. The sample consisted of two groups; GI included 118 asthmatic bronchitis children recruited from outpatient's clinics. GII included 100 cross-matched healthy children selected randomly from the hospital visitors. All the children were subjected to full history taken as age, residence, socioeconomic level, pet animals, playing outdoors,
and mother education chest examination. All participants were subjected to stool examination to exclude other parasites, oesinophilic count and detection of ELISA-IgG anti-Toxocara, skin prick test and total IgE for evaluation of atopy. The results showed that 17% of asthmatic children were seropositive for anti-Toxocara spp., compared to 7% of the control ones. There was significant relation between positive anti-Toxocara IgG and asthmatic bronchitis as well as total IgE. On the other hand, there was negative significant relation between toxocariasis and skin prick test.