Portable device generator of ozonized liquid for its independent use or connected to other apparatus to carry out medical and similar treatments.Device containing two interchangeable liquid inlets by means of a selector, a drier in the ambient air or oxygen inlet, two outlet connectors of ozonized liquid, a blending tank with a connector in its cap in order to facilitate the way of the conduits from outside the tank to inside it or from inside the tank to outside of it it is provided with an illumination system of the tank, a handpiece hose to carry out treatments autonomously, a gas outlet connector in order to be able to connect other devices or an ozone destructor it is also provided with a power supply system that allows its utilization connecting it to the electrical grid or batteries and a system for constantly controlling the ozonization levels of the blending tank.