The invention discloses a medium-length hole blasting one-time shaft-forming method used for a non-coal mine mountain. The method comprises the steps that 1, a no-heart blast hole is formed in the center position of the cross section of a cut raise, auxiliary blast holes and hollow holes are formed around the no-heart blast hole in the manner of alternating at equal intervals and in a square shape, and peripheral blast holes are formed in the inner side of the cut raise in a square shape; 2, the no-heart blast hole, the auxiliary blast holes and the peripheral blast holes are each blocked through a stemming woven bag to be divided into an upper section and a lower section, the holes in each section are filled with explosive in a coupling manner, detonators are installed in the explosive, and the positions, provided with the stemming woven bags, of the holes are on the same level; and 3, the no-heart blast hole, the auxiliary blast holes and the peripheral blast holes are detonated, namely, one-time blasting shaft-forming is achieved. The method has the beneficial effects that blast hole arrangement is simple, medium-length hole punching is convenient, speed is high, one-time hole forming is achieved by means of a drilling machine, the explosive is safe and fast to install on site, and the method is beneficial for site organization and implementation, safe and economical, improves cut raise forming efficiency and meets the technical requirement for forming a cut groove in the later stage.