One embodiment of a manual safety vegetable cutter has a frame which is supported on feet and which is provided with two parallel longitudinal uprights. The uprights define two guiding rails for a carriage which can be moved back and forth in translation and which are connected by means of a plate for adjusting the cutting width. At least one cutting blade is mounted transversely between the longitudinal uprights. The vegetable cutter is provided with at least one removable disc-cutting cartridge which can be inserted longitudinally between the uprights of the frame and which comprises a first edge, on which the cutting blade is mounted This disc-cutting cartridge is provided with gripping elements which co-operate with positioning elements provided on the frame.