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Abstract. Existing development for chopping and throwing components in harvester of fodder rape crop, which employs the discrete element method (DEM) simulation, has persistent challenges that use the accurate parameters to construct the right model, highlighting a need for calibration of model parameters. Taking the rape crop stem during flowering as the object, the calibration was carried out by using EDEM software. The basic attribute of the stem, including the repose angle, were measured. The Hertz-Mindlin contact mode was employed to conduct cylindrical lifting simulation test, in which the contact mode was used different parameter sets according to the test design rule of two-level factor test, steepest climbing test, and response surface analysis. The results showed that the recovery coefficient of collision of particles of crop stem, the recovery coefficient of collision between steel and particles of crop stem and the rolling friction coefficient between steel and particles of crop stem were slight effect on the angle of repose, whose values were determined as 0.55, 0.55 and 0.06 respectively. The static friction coefficient of particles of crop stem, the coefficient of rolling friction of particles of crop stem, and the static friction coefficient between steel and particles of crop stem were identified as 0.39, 0.04 and 0.25 respectively. The error rate of the value of repose angle between the simulated by using EDEM with the calibrated parameters and the real measured was 2.27%. The research provides the basic parameters for the simulation of the fodder rape crop mechanized harvest.