Abstract: PTC pipeline MFL(Magnetic Flux Leak)inspection data display and analysis system can be used in displaying, analyzing and processing the data about pipeline.This system has characteristic of high intelligence, easy to operate and multi-function.It can provide all information of corrosion indications, including odometer, depth, area, orientation, distance to the nearest known location, distance to upstream weld, distance to downstream weld and so on.It can also locate for all accessories and repairing indication of pipeline.This system can offer powerful support for oil and gas pipeline's safe operation.