The utility model provides a dark water well pipe way scale removal instrument, it can effectively be clear away dark water well pipe and say the dirt on the wall, more than the degree of depth can reach in 100 -meter dash, has solved and has not needed the professional staff guidance, and rig that need not professional unit need not chemical liquid medicine, can not pollute the problem of groundwater resources, and its is with low costs, easy operation, safe and reliable, applicable. Dark water well pipe way scale removal instrument is exactly with 4 piece at least blades of steel sheet preparation, the ring flange size is with dark water well pipe way flange, weld the blade on the ring flange, then with bolted connection on the pipeline, the scale removal instrument has just been makied, play the pipeline with electric block and put into the deep well, decline slowly along with the scale removal instrument, control rotatoryly more than 90, 4 blades on the scale removal instrument, just wipe the dirt of tying off on the dark water well pipe wall, after the root canal that has descended is said, second root in the connection, gradual connecting tube like this, more than the degree of depth can reach in 100 -meter dash.