Abstract:Oesophagostomum mainly parasitize the colon and intestinal lumen of cattle and sheep, and are widely present in cattle and sheep in various parts of China. Infected animals exhibit symptoms such as hunchback, abdominal pain, and stubborn diarrhea. Autopsy reveals colonic wall nodules, intestinal wall rupture, and even peritonitis. Saturated salt water floating method can detect pale yellow oval eggs, which can be preliminarily diagnosed based on clinical symptoms and egg morphology characteristics. Pathological autopsy reveals intestinal wall nodules and PCR testing can confirm the diagnosis. Oesophagostomum can cause intestinal lesions, leading to the inability to make intestinal casings and reducing the economic benefits of animal husbandry. This disease can be comprehensively controlled by avoiding grazing in the early morning and evening, harmless treatment of cow and sheep manure, and maintaining hygiene of forage and drinking water.