Abstract: Selection of flushing techniques and design of proper flusher are of great importance to pipeline cleaning. Thanks to experimental studies highly effecient, continuous flushing technology and its special flusher are developed. Continuous flushing is carried out with brush flusher going forth and back in pipeline. The special flusher. containing cleaning chemicals, is capable of running backward out of the pipe at line clogging. In the cause of development, the theoretical criteria for the design of special flusher are given according to the establishment and stress analysis of its mechanical model, and the structural design of flusher is decided, that is, an integral, disk type rubber plunger with brushing devices. Finally actural applications are introduced of the continuous flushing technology and the special flusher.