The invention provides a sizing machine warp breaking self-stop device, and belongs to the technical field of textile machinery. The device comprises a rack, wherein a weaving shaft is arranged on therack, a yarn is arranged on the weaving shaft, a telescopic reed is arranged at the upper portion of the rack, an electrostatic eliminating rod is arranged above the telescopic reed, a detector is arranged on the electrostatic eliminating rod, the detector has picture taking and memory functions, and the detector is connected with a sizing machine center control computer. The sizing machine warpbreaking self-stop device has the advantages that self-stopping or slow driving of the sizing machine after warp breaking are achieved to prevent the situations that the yarn is twisted and the quality is affected; the personnel cost can be reduced, and the labor productivity is improved.