Background: Ascaris lumbricoides is one of the most prevalent and largest nematodes found in humans is Ascaris lumbricoides. It is widespread throughout the world, affecting 25% of the world's population, and is most prevalent in tropical and subtropical regions. Some studies have been performed to describe the ultrastructure of the A. lumbricoides nematode using scanning electron microscopy (SEM). Patients and Method: The current study was performed on 300 schoolchildren, (162 males and 138 females), aged (1–15 years) from both rural and urban areas at Dakahlia province, to detect A. lumbricoides (Type Egypt) in their faeces. The samples were collected with the approval of the Local Ethics Committee of Zagazig University, Faculty of Science. Written informed consent was obtained from the authorities of the Egyptian Ministry of Education and from students' parents under the supervision of a responsible consultant doctor in each school. The A. lumbricoides worms extracted from faecal samples of infected cases after macroscopic and microscopic examination were then examined by scanning electron microscopy (SEM). Results: The intestinal parasitic infections with A. lumbricoides was positive in 42 cases (14%) of the studied cases. Mixed infection with two parasites, Ascaris lumbricoides and Enterobius vermicularis, in the same patient formed additional 42 cases (14%) of the examined cases. The frequency of infection was not associated with either age, or sex. SEM images described the criteria of different parts of studied A. lumbricoides (Type Egypt). The anterior end of A. lumbricoides revealed broad cervical alae and three large lips, one dorsal and two subventral, with the inner face of the free edge of each lip bearing an uninterrupted row of small, blunt, conoid denticles along almost its entire length. The denticles were almost of equal size and typically unicuspid. Conclusion: Our survey conducted to study the distribution and abundance of A. lumbricoides nematodes among children at Dakahlia province. The prevention and control programs against sources and reservoirs of A. lumbricoides should be planned by public health based on reliable information from systematic surveillance. In addition, the ultrastructure study of adult A. lumbricoides (Type Egypt) worm by SEM gives more details about criteria of worm that help understanding the morphology in these species.