Abstract:In this study, the feeding habits of Ampithoe valida were analyzed, and its response to different temperature and salinity were observed. It was found that (1) the contents of the digestive tract of A. valida were classified into organic debris and algae;(2) Among the digestive enzymes in the digestive tract of A. valida, the activity of trypsin was the highest, followed by LPS, which was higher than AMS; (3) More rapid growth was achieved when A. valida fed on shrimp pellet diet, compared with diets such as Chaetomorpha antennina, Chlorella,bioflocculant(biofloc) and clam meat diets; (4) Adult A. valida showed greater ability for high temperature resistance than young ones, and this tolerance is related to their living water temperature; (5) A. valida is a euryhaline animal, which can survive a salinity in the range of 4~40.