The invention provides a water draining pipe disconnection disease non-water-outage non-excavation repairing method. The method comprises the following steps that a pipeline sonar is used for detecting the disconnection position, and a traction rope is used for making marking; according to the mark on the traction rope, a hollow columnar air bag is pulled to the disconnection position, an air compressor on the ground controls an air bag valve to inflate the hollow columnar air bag, and the air bag is expanded to be tightly attached to the pipe wall; grouting holes are drilled in the position over the disconnection position and the two sides on the ground to the disconnection position, grouting pipes are inserted into the grouting holes, a grouting system on the ground injects dual-slurry quick-setting repairing materials to the disconnection portion, and waiting for solidifying of the repair material is carried out; the hollow columnar air bag is deflated, and the traction rope is usedfor pulling out the air bag; due to the use of the hollow columnar air bag, in the repair process of the disconnection position, sewage can flow out from the hollow columnar air bag, water outage isavoided, and the negative effects on a whole eliminating system during water-outage repair for the disconnection disease of the main water draining pipeline can be greatly reduced.