The invention discloses a packing method for a blasting hole with water. An emulsion explosive fills a drilled blasting hole with water and then the emulsion explosive is packed by water as stuffing. The packing process provided by the invention shortens the packing time and improves the packing efficiency. Moreover, the packing length is increased by virtue of water packing, the single hole explosive payload is reduced, the vibration of blasting is reduced, 70% or over of explosion dust is reduced, and the working environment is optimized; moreover, as water has the characteristics of being incompressible and transferring energy in every direction, an explosive section is expanded in a columnar shape by adopting water packing, and the water packing section absorbs energy and is continue to expand in the columnar shape, so that the lumpiness of rocks generated on the top of the blasting hole and generated by bottom detonation is uniform, blocks are unlikely to generate, a follow-up mining operation of the rocks is facilitated, the crushing step is canceled, and the follow-up processing cost is lowered.