To address the accumulation and blockage issues in coal chute transportation, an optimized chute structure design method based on the biomimetic mechanism of the lotus leaf's hydrophobicity is proposed. First, the chute curve is calculated by applying the steepest descent line in conjunction with the overall height of the coal chute. Points of abrupt slope changes and delayed changes are identified using the gradient descent principle. The chute bottom plate parameters are derived from the linear equation, and a relevant physical model is established. Second, an optimized coal chute model is developed based on the micro-nano structure of the lotus leaf surface. Finally, a three-factor, three-level orthogonal experiment is conducted. The movement of coal particles is simulated using Fluent-Rocky DEM coupled simulation, and the optimal parameters of the optimized structure are determined through range analysis: When the pore diameter is 20 mm, the pore spacing is 100 mm, and the wind speed is 100 m/s, the material particles exhibit the highest flowability, with no accumulation or blockage observed. Additionally, finite element analysis was conducted on the optimized coal chute. The results indicate that under a flow rate pressure of 1500 t/h, no deformation occurs, and the structural strength meets the requirements for normal coal transportation.