<p>To overcome the limitation of excessive empirical dependence in the parameter design of one-step raise excavation, this paper developed a parameter optimization method based on field test and numerical simulation. Field tests on crater and cut blasting, are designed to determine the key parameters such as optimal burial depth ratio, hole spacing, and cut mode, which are normally determined by empirical formula. Then, numerical simulation was employed to analyze the rock failure mechanism and validate the reliability of the field tests. Finally, numerical simulation was used to illustrate the one-step raise excavation process, while also acknowledging the study’s limitations and difficulties in the design of blasting parameters. The results indicate that the proposed method for optimizing the parameters of one-step raise excavation has remarkable feasibility and excellent excavation effect. The main difficulties of one-step raise excavation based on spherical charge and parallel cuts are rock clamping and borehole deflection respectively, which should be considered in the optimization of blasting parameters.</p>