The invention discloses a pipeline inner wall defect image acquiring robot with a spiral propelling device. The pipeline inner wall defect image acquiring robot comprises an image acquiring device, apower device and the spiral propelling device which are sequentially connected through spiral springs. The image acquiring device comprises a hollow image acquiring device box body, an LED disc is fixed to the top of the image acquiring device box body through screws, and a CCD camera is embedded into an empty groove in the LED disc. A control module is mounted in the image acquiring device box body, the power module comprises a hollow power box, and a direct-current gear motor is mounted in the power box. The control module is in control connection with the direct-current gear motor, the spiral propelling device comprises an elastic spiral propelling frame distributed in a spiral shape from top to bottom, and a plurality of shafts are arranged on the spiral propelling frame in the spiraldirection. The shafts are connected with driving wheels through bearings. According to the pipeline inner wall defect image acquiring robot, the ability of the robot for passing through a curve is improved, the function that the robot overall passes through a 90-degree extreme curve with the medium-small diameter is achieved, and the pipeline inner wall defect image acquiring robot is not only limited in passing through a straight pipeline.