An ultrasound medical apparatus, comprising: an imaging transducer configured to: transmit a first imaging ultrasound to a target object, receive a first echo signal reflected from the target object in response to the first imaging ultrasound, generate a first reception signal based on the first echo signal, transmit a second imaging ultrasound to the target object, receive a second echo signal reflected from the target object in response to the second imaging ultrasound, and generate a second reception signal based on the second echo signal; a signal processing unit configured to: generate a first image picture based on the first reception signal, output the first image picture to a display unit, and generate a second image picture based on the second reception signal; a user input unit configured to receive an input of focal-point information on the first image picture; a treatment transducer configured to transmit a first high-intensity ultrasound for pre-targeting having an intensity lower than a predetermined output value and to transmit a second high-intensity ultrasound for treatment having an intensity corresponding to the predetermined output value to a focal point corresponding to the focal-point information; wherein the imaging transducer and the treatment transducer are synchronized such that the imaging transducer is configured to transmit the second imaging ultrasound to the target object when the first high-intensity ultrasound reaches the focal point, such that the second image picture reflects change in density of the target object as a result of the first high-intensity ultrasound; a focusing-location extracting unit configured to: extract from the second image picture a location having a largest change in graysacle relative to the first image picture, and wherein the extracted location is actual focal-point information representing an actual focal point at which the first high-intensity ultrasound is focused; and a compensating unit configured to: generate a compensation value based on the focal-point information and the actual focal-point information, and apply the compensation value to the focal-point information. an imaging transducer configured to: transmit a first imaging ultrasound to a target object, receive a first echo signal reflected from the target object in response to the first imaging ultrasound, generate a first reception signal based on the first echo signal, transmit a second imaging ultrasound to the target object, receive a second echo signal reflected from the target object in response to the second imaging ultrasound, and generate a second reception signal based on the second echo signal; transmit a first imaging ultrasound to a target object, receive a first echo signal reflected from the target object in response to the first imaging ultrasound, generate a first reception signal based on the first echo signal, transmit a second imaging ultrasound to the target object, receive a second echo signal reflected from the target object in response to the second imaging ultrasound, and generate a second reception signal based on the second echo signal; a signal processing unit configured to: generate a first image picture based on the first reception signal, output the first image picture to a display unit, and generate a second image picture based on the second reception signal; generate a first image picture based on the first reception signal, output the first image picture to a display unit, and generate a second image picture based on the second reception signal; a user input unit configured to receive an input of focal-point information on the first image picture; a treatment transducer configured to transmit a first high-intensity ultrasound for pre-targeting having an intensity lower than a predetermined output value and to transmit a second high-intensity ultrasound for treatment having an intensity corresponding to the predetermined output value to a focal point corresponding to the focal-point information; wherein the imaging transducer and the treatment transducer are synchronized such that the imaging transducer is configured to transmit the second imaging ultrasound to the target object when the first high-intensity ultrasound reaches the focal point, such that the second image picture reflects change in density of the target object as a result of the first high-intensity ultrasound; a focusing-location extracting unit configured to: extract from the second image picture a location having a largest change in graysacle relative to the first image picture, and wherein the extracted location is actual focal-point information representing an actual focal point at which the first high-intensity ultrasound is focused; and extract from the second image picture a location having a largest change in graysacle relative to the first image picture, and wherein the extracted location is actual focal-point information representing an actual focal point at which the first high-intensity ultrasound is focused; and a compensating unit configured to: generate a compensation value based on the focal-point information and the actual focal-point information, and apply the compensation value to the focal-point information. generate a compensation value based on the focal-point information and the actual focal-point information, and apply the compensation value to the focal-point information.