To solve the problem of the small section and the low altitude in the shaft excavation, the nine-hole parallel cutting technology of the shaft excavation in one-step is proposed in this paper. Firstly, according to the rock failure mechanism in cutting blasting, the main parameters of the shaft excavation are identified. The parallel cutting method works on modes of four empty holes and the diameters of the hole and the empty hole are 0.11m and 0.25m, respectively, and the distance between the cutting hole and the empty hole is 0.46m. Then, the numerical stimulation of the cutting blasting, as the key of the nine-hole parallel cutting mode technology of the shaft excavation, is carried out by the LS-DYNA 3D software and the cavity formation can be visualized. The results of the numerical stimulation show that the parameters are reasonable so that the lotus-shaped cutting cavity can be formed by the main cutting hole blasting and the auxiliary cutting hole can further expand the cavity size. Finally, based on the theoretical analysis and the numerical stimulation and with the engineering case of the shaft excavation by blasting in an open-pit mine in mind, the field experiment is carried out with the selected parameters and a 23. 4m patio is formed with section of 4m×4m. The results of the experiment have verified the accuracy of the numerical stimulation and the feasibility of this technology of the shaft excavation in one-step.