Abstract: 8 HyLine Brown cocks and 8 Peking drakes with the same weight and age (18 weeks) were slaughtered after fasting 8 h to compare the pH in digestive tract and digestive enzyme between cock and drake.The results showed that: (1) The pH value of crop, glandular and stomach gizzard content in drake were lower than those of cock (P<0.05 or P<0.01), but the jejunumileum and rectum content pH value of drake were higher than those of cock(P<0.05). (2) The relative activity and total of pepsin in stomach gizzard content of drake significantly higher than those of cock (P<0.01). The relative activity and total of trypsin in duodenum, jejunumileum and caecum content of drake were significantly higher than those of cock (P<0.05 or P<0.01). The relative activity of chymotrypsin in jejunumileum content of drake were significantly higher than those of cock (P<0.05). (3) The relative activity of lipase activities in pancreas tissue of drake was significantly higher than those of cock (P<0.05), and the total was also higher (P<0.01). (4) There was no orderliness for the differences of amylase and maltase activities in digestive tract content and digestive organ tissue between cock and drake, but the relative activities of cellulase in jejunumileum content of drake were significantly higher than those of cock (P<0.01), and in rectum content the total of cellulase was higher than those of cock (P<0.05).