Abstract: Loading rate is one of the key factors affecting the crushing characteristics of ore. In order to explore the influence of loading rate on the failure characteristics of irregular molybdenum ore, uniaxial compression experiments of irregular molybdenum ore at different loading rates were carried out. The effects of loading rate on the failure mode, peak load, displacement change, fracture energy, crushing strength and Weibull distribution model of molybdenum ore were systematically studied. The experimental results show that with the increase of loading rate, the damage degree of irregular molybdenum ore is more severe, the peak load shows an increasing trend, and the increase is more significant at high loading rate, and the peak displacement ( peak strength corresponding displacement ) gradually decreases. The fracture energy does not change significantly at low loading rates (0.1 mm/min and 0.5 mm/min), and the fracture energy increases significantly at high loading rates (10 mm/min). With the increase of loading rate, the crushing strength of irregular molybdenum ore increases sharply at first and then increases slowly, which approximately satisfies the power function relationship. The two-parameter Weibull distribution model can better describe the crushing strength distribution of irregular molybdenum ore. The modulus m of Weibull distribution is constant and has nothing to do with the loading rate. The characteristic strength σ0 increases with the increase of loading rate.The research results of this paper further enrich and expand the theory and method of irregular ore crushing.