Cynoglossus semilaevis Günter, a deep water flat fish species, is a popular marine species in aquaculture with high market value and a good taste.Although techniques of large scale artificial breeding have made significant break through in recent years, which resulted in a successful seedling breeding of C. semilaevis, C. semilaevis culture was not successful due to a difficulty in feeding with pelleted diets under industrial conditions. To solve the problems, study of the sensory mechanisms of the tongue sole in feeding is of special significance. The feeding mechanisms of C. semilaevis were reported in this paper according to the late research. The author suppose that C. semilaevis has two possible feeding modes. For motile prey, fish use mainly lateral line and gustation in the oropharyngeal cavity for the detection and recognition of prey, and for still prey, olfactory organ and papillae on the abocular side of the head for the detection and recognition of prey. Based on these studies，the author confer that both stimulating the chemistry sense organ and stimulating the mechanism sense organ should be considered to improve the feeding.