The invention discloses a hydrolytic ozone wound treatment apparatus capable of being directly injected with water. Through a tap water filtering device, tap water is directly connected into an inletof the filtering device; the tap water is preliminarily filtered through a filtering chamber, and pure water is preliminarily obtained through a reverse osmosis device; the filtered pure water is pressurized by a booster pump and then is further filtered by an EDI device to obtain pure water of higher purity, and the pure water enters a water storage tank and flows into an electrolytic tank for use through a pipe; the electrolytic tank is partitioned into two parts by a partition board; ozone electrolyzed by an anode is discharged from an exhaust port for use in the next step, and hydrogen electrolyzed by a cathode motor is discharged from a gas port of a cathode chamber; an anode cell and a cathode cell are separated, so that the electrolyzed hydrogen and the electrolyzed ozone are separated and not mixed, and thus the ozone purity is improved; through multi-stage filtration of the tap water, the pure water which can be directly used is produced for use in the electrolytic tank, so that the hydrolytic ozone wound treatment apparatus is convenient to use; through concentration of multi-stage filters together, the filtering device is small in volume and does not occupy space duringusing.