A self-moving working device for three-dimensionally protective no-tillage deep scarification and deep fertilization, comprising a work platform (1), a traveling component (2) that can move the work platform (1) to a work area, and a self-moving work assembly arranged on the work platform (1) and used for work after the work platform (1) is moved to the work area, wherein the self-moving work assembly comprises at least one work group for performing deep scarification by breaking up soil with sprayed compressed air and for deep fertilization by spraying powder materials into said soil, and a control system for controlling the work group to work and to move each of the work groups at least includes a work unit arranged on the work platform (1) the work unit comprises a work execution means, a drive assembly that can drive the work execution means to move back and forward in the work direction and drive the work platform to move after the work execution means is inserted into the soil, and a drive means (3) that can drive the work execution means to rotate on a vertical plane for up and down movement the work execution means comprises a spear (4) for deep scarification and deep fertilization, and a piston rod vertically fixed to the spear (4) for deep scarification and deep placement to drive the latter to insert into or pull out of a hydraulic cylinder I (5) in the soil. This work process achieves a no-tillage deep scarification and deep fertilization effect without turning the soil and without upsetting the original soil layer structure.Linvention concerne un dispositif de travail automoteur de protection dans trois dimensions pour la scarification et la fertilisation profondes sans labour, comprenant : une plate-forme de travail (1), un composant de déplacement (2) pouvant déplacer la plate-forme de travail (1) vers une zone de travail, ainsi quun ensemble de travail automoteur disposé sur la plateforme de travail (1) et utilisé pour le travail après le déplacement
