Abstract: Endocrine cell could produced many kinds of gut hormones with the function of regulating stomach and intestine.Besides promoting the digestion and absorption of nutrient substance in stomach and intestine,these hormones could controlled feeding behavior,regulated the movement of digestive tract and trophic action of cell,even influenced the activity of other endocrine glands.Understanding the basic overview of endocrine cell in intestine was conducive to progress the penetrating research on digestive physiology of fishes.Histochemistry immunocytochemistry and electron microscope technique were important ways to study the identification,location and morphology of endocrine cell in digestive tract.Using these techniques could revealed biological function and mechanism of action of endocrine cell in digestive tract,which has meaning to research the physiological mechanism of ingestion,digestion and absorption of fishes.Thus,aimed to offer reference for digestive physiology,endocrinology and nutriology of fishes,we overviewed the progress and main methods in internal and overseas studies of endocrine cell in digestive tract of fishes for the past few years.

Key words: Osteichthyes, digestive tract, endocrine cell, gut hormone, histochemistry, immunocytochemistry