Abstract: For further understanding the digestive physiology process of Zi goose in different growth period, the distribution of somatostatin immunocompetent cells in digestive tract of Zi goose in different ages （1, 10, 30, 60 and 90 d）was studied by SP immunohistochemical method. The results showed that somatostatin （SS）cells were not observed in digestive tract of 1-day-old Zi goose and it emerged until 10-day-old.The number of SS cells increased with the growth of day-old. There were more SS cells in the gizzard and the glandular stomach, densely in the pylorus and occasionally in the duodenum.