Abstract: To address the rock drilling issues in the stage of super-large underground filling mines, and explore efficient rock drilling methods that can reduce costs and increase efficiency, and facilitate rapid commissioning and reaching full production capacity，by applying the comparative analysis method, a com⁃ prehensive analysis is conducted on the two mainstream rock drilling methods of large-diameter vertical deep holes and downward fan-shaped deep holes. From the aspect of the layout form of the stope, this paper deeply analyzes the differences in stope structure under different rock drilling methods and their influence on the overall mining layout. Detailed statistics and comparisons of the mining and cutting engineering vol⁃ ume are directly related to the initial construction cost of the mine. For the design of perforation blasting, in�depth research is conducted on the effects of different parameter settings on rock drilling efficiency and blast⁃ ing quality. The research finds that the downward fan-shaped deep hole drilling method has a simple field layout, high space utilization rate, deep hole blasting can achieve large-scale ore collapse, small mining en⁃ gineering volume, and the perforation blasting design is easy to standardize operation. Although the large-di⁃ ameter vertical deep hole rock drilling method is flexible under specific geological conditions, the overall mining cost is relatively high. After comprehensive analysis, the downward fan-shaped deep hole drilling method, with its significant advantages such as low mining cost and large production capacity of ore blocks, can effectively support the cost reduction, efficiency improvement and rapid production of super-large under⁃ ground mines. It is a more efficient choice for drilling in the stage of super-large underground filling mines, laying a scientific foundation for the optimization of mining plans.