The Eggers stomach content method was applied in a simulating experiment in situ to study the effect of drilling noise and vibration pollution on Ctenopharyngodon idellus.The relationship of distance with drilling noise and vibration intensity was analyzed. The change of food weight in digestive tract with time could be described as S t=4.997e -0.3202 t , and instantaneous gastric evacuation rate calculated by the formula was R t = 0.3202gw.w./(kg·h). Noise and vibration pollution presented signific...