This paper reports in a systematic manner the results from the study on the biology of Cultellus xalprum, such es the morphological structure, distribution, habitat bottom soil, feeding habits, features of growth and reproduction and the age structure in the population of the animal in Funing Bey, which provides basic information for the mariculture of this species of commercial shellfish.Cultellfish scalprum.is a subtropical species es it lives in waters of 10.3-28.0℃ and reproduces in waters of 15.6-28.0℃.The major factors that affect the growth of this species include water temperature, phytoplanktons and its reproduction activities.