The utility model relates to a go here and there pump pipe -line system fast for dredger. Including connecting first the maintenances pipeline that advances the mud mouth at dredge pump, be connected with R type tee bend pipeline in first outer end of examining and repairing the pipeline, still including bypass bending pipeline and the bypass straight tube way connected, still overhaul the pipeline including connecting the second that advances the mud mouth at no. Two dredge pumps, be connected with entry bending pipeline and entry straight tube way in order in the outer end that the second overhauld the pipeline, be connected with fixed rubber nipple joint and export bending pipeline in order at the play mud mouth of no. Two dredge pumps, still send the mud pipeline including connecting what underwater dredge pump went out the mud mouth, be connected with the y -type three -way pipe way in the outer end of sending the mud pipeline, bypass bending pipeline's outer port is adjusted well with the second mouth of pipe of R type tee bend pipeline, and the outer port that the bypass straight tube was said and the second mouth of pipe that y -type three -way pipe said are adjusted well, the outer port that the entry straight tube was said and the third mouth of pipe that y -type three -way pipe said are adjusted well, the outer port that outlet elbow said is adjusted well with the third mouth of pipe of R type tee bend pipeline.