Congenital pyloric stenosis is a relatively common disease in neonatology, mostly caused by congenital developmental abnormalities, but its specific causes are still inconclusive and may be related to the following factors: 1) hypertrophy of the pyloric annulus during development; 2) viral infections; 3) local annulus hypertrophy associated with endocrine hormonal changes in the body after the patient’s birth; the symptoms associated with such children appear 2-3 weeks after birth, mainly manifesting as nausea, vomiting, and vomiting after eating, and the vomit does not contain bile; the obstruction site is in the pyloric segment.