[Objective] The purpose was to lay a theoretical foundation for enhancing pork quality through utilizing halothane gene reasonably in Fengqiao town.[Method] The blood samples were extracted from breeding pigs randomly in the large-scale piggeries of Fengqiao town in Jiaxing County and the halothane gene was detected by PCR-RFLP technique.[Result] The recognition site of endonuclease Hha Ⅰ was 5′GCG↓C3′.The PCR amplified product was a segment containing the 1843rd site of gene RYR1 and its length was 659 bp....