Abstract: In order to determine the operation parameters of blackcurrant harvester, three parameters, namely, frequency, amplitude and location were selected as input variables, and the blackcurrant harvesting rate and branch vibration force were selected as output parameters. A quadratic orthogonal rotary regressive experimental design was employed to develop the second order polynomial regression models, which explained the relationship between the input and output parameters. An optimum combination of input parameters was obtained with the region of frequency 945-1135 r/min, amplitude 33-25 mm and a location of 0.60. The optimum operation parameters may result in the harvesting rate above 95%, vibration force less than 4 N, and branches and berries were not damaged.