Abstract:In order to study the Elastic modulus and Poisson"s ratio of the pear fruit flesh, Circular-shaped samples of pear fruit flesh was prepared, Two groups of pear fruit flesh compression test of restrained and unrestrained was carried out, Obtained the pressure-displacement curve of the pear fruit flesh, and the true stress-strain curve, Elastic modulus and Poisson"s ratio were obtained by calculation. When the compressive strain is in the range of 0~0.1, the Elastic modulus of the pear fruit flesh increases but the Poisson"s ratio decreases slightly with the compressive strain. When the compressive strain is 0.02, 0.04, 0.06, 0.08 and 0.1, the Elastic modulus of the pear fruit flesh is 6.19×105, 9.63×105, 1.28×106, 1.56×106 and 1.81×106 Pa, the Poisson"s ratio is 0.421, 0.409, 0.391, 0.364 and 0.314, respectively. And then, The finite element model of the pear fruit flesh compression experiment was established, the validity of the experimental method for determining Poisson"s ratio and elastic modulus was verified, the effected of the friction during the experiment was analyzed, and the experimental process was simulated by using the measured elastic parameters of pear fruit flesh, the result obtained by simulation is in good agreement with the experimental results. The experimental results will provide design basis for the design of pear picking, sorting, packaging and transportation machinery.