The invention relates to a device for disturbance of soil at the back of a shield tunnel and aims to generate rotating water flow via the device by use of high-pressure water to cut soil and enable soil and water to be discharged from a central hole of the device by use of the soil and water pressure difference between the inside and the outside of soil after disturbance. Besides the capability of soil and water scooping and discharging, the device can perform grouting reinforcement on disturbed soil by use of an external measuring system. The technical scheme is that the device for disturbance of soil at the back of the shield tunnel is characterized in that the device is formed by connecting an accessory I and an accessory II via three bolts with equal included angles, and soil-water scooping and discharging holes with the same diameter are formed in the centers of the accessory I and the accessory II and are through in the axial direction. The device is suitable for correction of the deformed shield tunnel and rectification of the shield tunnel subjected to differential settlement or horizontal displacement.