The invention belongs to the technical field of stationery commodities, and relates to a semi-automatic pencil-sharpening machine. The semi-automatic pencil-sharpening machine comprises a rack, a rotary motor-speed reducer combination, a rotary disc, a cutting motor, a cutting cutter disc and a plurality of pencil fixing assemblies. An inner gear ring is horizontally arranged on the rack. The rotary disc is in a disc shape, and a plurality of mounting holes are formed in the edge of the rotary disc. An output shaft of the rotary motor-speed reducer combination is fixedly connected with a hub. Each pencil fixing assembly comprises a small gear and a plurality of snap springs, and the pencil fixing assemblies are mounted in the mounting holes. The small gears are engaged with the inner gear ring, and a hole is formed in the middle of each small gear. Each snap spring is in a hollow barrel shape and is provided with a plurality of sections and fixedly connected in the hole of the corresponding small gear. The cutting cutter disc is conical, cutting edges are arranged on the periphery of the cutting cutter disc, and the hub is fixedly connected with an output shaft of the cutting motor. The semi-automatic pencil-sharpening machine achieves semi-automatic treatment and is high in treatment efficiency; and students do not need to sharpen pencils manually and can have a rest outdoors at break, asthenopia is relieved, nearsightedness is effectively avoided, and a large amount of time of the students is saved.