Abstract: The pickaxe pick is the core cutter for coal mine roadway excavation and coal mining of coal mining equipment such as road headers, shearers, continuous mining machines and anchor digging machines, and its cutting performance will directly affect the cutting performance indicators such as coal and rock cutting load and cutting specific energy consumption during mining. For the open-pit coal mine continuous shearer, the influence of the installation parameters of the pick-shaped pick on the cutting load and the energy consumption of the cutting ratio of coal and rock under different cutting conditions and tooth distribution conditions. A coal failure model based on Drucker−Prager plasticity model and Shear Damage criterion was established, and the displacement criterion and stress field tracking method were used to characterize the crack propagation behavior on the coal and rock mass. The rock breaking mechanism of pick-shaped picks during the cutting process of coal and rock was analyzed, and the movement characteristics of picks intruding into coal and rock mass through compressive stress were revealed. The finite element model of pick-shaped picks for straight cutting of coal and rock was established to realize the quantitative analysis of the cutting process of coal and rock mass. Through the linear and rotary cutting simulations, the influence of parameters such as cutting angle, cutting depth, cutting speed and adjacent picking spacing on the cutting performance is revealed. Among them, there is a dynamic smoothing mechanism for the cutting angle, which can realize the optimal solution of cutting efficiency and specific energy consumption. There is a positive correlation between the cutting depth and the crushing of coal and rock. There is a critical threshold effect in the picking spacing, and the best synergistic cutting effect is produced when the spacing is 10 mm, which significantly improves the cutting efficiency. The effect of cutting speed is relatively small. The offset cutting model is further established, and the stress concentration on the pick seat is aggravated under the offset condition, and the risk of wear failure increases. The simulation results show that the optimized cutting performance of the picks is better, and the field experiment effect is remarkable, which provides a reference for the optimal design of the cutting mechanism and cutting process of the continuous shearer in open-pit coal mine.