The inclined vibration platform and silver carps were used to explore theoretical basis of the vibration device for orientating fish’s head and tail.The motion rules of silver carps on the platform were theoretically studied.After obtaining parameters of a fish,the movement of the fish on the inclined vibration platform was simulated by Matlab.The relationship of orientation time with size of excitation force,angle between excitation force and platform,dip angle of platform and frequency of excitation force was investigated.Taking self manufactured orientation equipment as test equipment,highspeed camera as monitoring device and silver carps weighted about 1 kg as research objects,the orientation time and orientation success rates under different input parameters were studied.Based on the results of numerical simulation and experiment,the rules of orientation time and success rates with size of exciting force,angle between exciting force and platform,dip angle of platform and frequency of exciting force were discribed,which will provide important basis for designing the orientation device of freshwater fish head and tail.