A portable ultrasound diagnosis device (110, 200) comprising: an ultrasound reception/transmission module configure to, by using a first power, scan a target object by transmitting ultrasound signals to the target object and receiving ultrasound echo signals reflected from the target object; a signal processing module configured to, by using a second power, generate pulses for generating the ultrasound signals and generate ultrasound data by using the ultrasound echo signals; a wireless communication module configured to, by using a third power, communicate with a medical device; a controller configured to control supply of the first power, the second power, and the third power based on operation states of the portable ultrasound diagnosis device (110, 200); a power unit configured to supply or block the first power, the second power, and the third power according to control of the controller; and a display, wherein the controller is further configured to: supply the first power, the second power, and the third power when the portable ultrasound diagnosis device (110, 200) performs scanning, block the first power and supplies at least one of the second power and the third power when the portable ultrasound diagnosis device (110, 200) finishes performing scanning, and block the first power and the second power and supplies the third power when manipulation of the portable ultrasound diagnosis device (110, 200) is not detected for a first time, and block the first power, the second power, and the third power when manipulation of the portable ultrasound diagnosis device (110, 200) is not detected for a second time. an ultrasound reception/transmission module configure to, by using a first power, scan a target object by transmitting ultrasound signals to the target object and receiving ultrasound echo signals reflected from the target object; a signal processing module configured to, by using a second power, generate pulses for generating the ultrasound signals and generate ultrasound data by using the ultrasound echo signals; a wireless communication module configured to, by using a third power, communicate with a medical device; a controller configured to control supply of the first power, the second power, and the third power based on operation states of the portable ultrasound diagnosis device (110, 200); a power unit configured to supply or block the first power, the second power, and the third power according to control of the controller; and a display, wherein the controller is further configured to: supply the first power, the second power, and the third power when the portable ultrasound diagnosis device (110, 200) performs scanning, block the first power and supplies at least one of the second power and the third power when the portable ultrasound diagnosis device (110, 200) finishes performing scanning, and block the first power and the second power and supplies the third power when manipulation of the portable ultrasound diagnosis device (110, 200) is not detected for a first time, and block the first power, the second power, and the third power when manipulation of the portable ultrasound diagnosis device (110, 200) is not detected for a second time. supply the first power, the second power, and the third power when the portable ultrasound diagnosis device (110, 200) performs scanning, block the first power and supplies at least one of the second power and the third power when the portable ultrasound diagnosis device (110, 200) finishes performing scanning, and block the first power and the second power and supplies the third power when manipulation of the portable ultrasound diagnosis device (110, 200) is not detected for a first time, and block the first power, the second power, and the third power when manipulation of the portable ultrasound diagnosis device (110, 200) is not detected for a second time.