Abstract: A pigeon group emerged to the sudden death (2.5% of mortality) in a pigeon farm. Clinical anatomy showed large of Ascarids parasiting in the gastrointestinal. Two hundred and twenty-six fecal samples were examined using the Sheather’s sucrose flotation method. Four species of worms were detected, including Ascarid (39.8%), Angiostrongylus (2.7%), tapeworm (2.7%), and Capillaria (2.2%). Among which, Ascarid mainly infected adult pigeon and the infectious intensity was high. Thus, ascariasis was confirmed in this farm. Then, targeted therapies were used to the pigeon group. After treatment, no pigeon die again, and the infection rate decreased to 19.8%, it was lower than before. Moreover, Angiostrongylus and tapeworm were not detected. The result showed that treatment effect was well, the intestinal parasites was released in this pigeon farm.

Key words: pigeon; ascariasis; prevention and treatment