The present invention relates to a self-installing type personal sterilizer using a piezo effect and a sterilizing method. According to the present invention, in a self-installing type personal sterilizer using a piezo effect, A sterilizer main body 100 installed in a longitudinal direction on the support surface and having a circular or rectangular metal case shape； A base module 200 coupled to a lower end of the sterilizer main body 100 and supporting the sterilizer main body 100 in a sliding manner so as to be fixed to the support surface and including a power supply unit； And a fastening cover 300 coupled to both ends of the sterilizer main body 100 and serving as a finishing material. A plurality of grooves 110 are formed in the longitudinal direction of the sterilizing machine body 100 on the outer circumferential surface of the metal case so that the wall panels can be slidably assembled into a booth shape. The protrusions 210 are formed on the inner circumferential surface of a part of the base module 200 in the same direction as the longitudinal direction of the sterilizer body so that the sterilizer main body can be slidably engaged. do. In addition, the human body detection sensor is provided in the interior of the sterilizer main body 100 in both directions, recognizing a person who is moving and guiding them by voice, and is equipped with a human body safety filter and an ultraviolet sterilizing lamp. In the disinfection method of the self-installing type personal sterilizer using the piezo effect, The disinfecting main body 100 is characterized in that the disinfectant is sprayed into the sterilizing disinfecting particles by the vibration of the ultrasonic vibration module using a piezoelectric effect. The self-installing type personal sterilizer using the piezo effect according to the present invention is easy to assemble and install / operate by the user, has a small economic burden, has a small installation volume and is excellent in spatial effici
