The utility model provides a quiet cutting ring soil sampling device in moving outward, including first joint, the linkage segment of rigid coupling in proper order with there is the outer pipe that moves of cutting edge, move the intraductal buffer gear of having outward, buffer gear connects outer pipe and the interior static pressure cutting ring sampling tube of moving, moves the outside of tubes outside interior static pressure cutting ring sampling tube stretches out, interior static pressure cutting ring sampling tube and move outward and have the space between the pipe, install the cutting ring in the interior static pressure cutting ring sampling tube, interior static pressure cutting ring sampling tube middle section is passed through coupling mechanism and is connected second joint and guan ren, and the second connects even buffer gear. Exert pressure through interior static tube, in the soil layer of pipe sword static pressure injection drilling bottom, the drilling rod drives the outer tubespinning that moves and cuts soil, the sample of interior static pressure cutting ring sampling tube injection soil layer, stopping boring, taking off soil sampling device, interiorstatic pressure cutting ring sampling tube of separation and buffer gear take off the second and connect and guan ren, separately form the body, take out the cutting ring, get cutting ring appearance.The requirement of not disturbance of I level appearance is satisfied to the cutting ring appearance that this soil sampling device gained, improves geotechnical engineering investigation's quality and efficiency.