An apparatus for generating a laser, comprising: a display unit displaying a battery charge state and an intensity of a laser; a switch unit provided to turn power on/off, adjust the intensity of the laser and control emission of the laser; and a control unit controlling at least the display unit, and a reflector (10, 10a) having a first space and a second space therein; a xenon tube emitting light in the first space; a crystal rod amplifying the light in the second space and generating a laser; a focusing lens focusing the laser and forming a focus; a focusing lens installation part in which the focusing lens is installed; a capacitor applying voltage to the xenon tube; a drive unit controlled by the control unit and charging the capacitor; and a battery supplying power to the drive unit, Characterized in that the apparatus further comprises: a safety unit comprising first through third contact point parts (81, 82, 83), the first and second contact point parts (81,82) being disposed on left and right sides of a front end of the PCB and the third contact point part being provided on a rear end of the PCB, and in that the control unit controls an operation of the apparatus when: * a user makes contact with his hand with the third contact point part, and * a body part of a user to be involved with blood collection makes further contact with said first and second contact point parts, and the display unit, the switch unit, the safety unit, the control unit are arranged on an upper surface of a PCB and the reflector (10, 10a), the xenon tube, the crystal rod, the focusing lens, the focusing lens installation part, the capacitor, the drive unit, and the battery are arranged on a rear surface of the PCB. a display unit displaying a battery charge state and an intensity of a laser; a switch unit provided to turn power on/off, adjust the intensity of the laser and control emission of the laser; and a control unit controlling at least the display unit, and a reflector (10, 10a) having a first space and a second space therein; a xenon tube emitting light in the first space; a crystal rod amplifying the light in the second space and generating a laser; a focusing lens focusing the laser and forming a focus; a focusing lens installation part in which the focusing lens is installed; a capacitor applying voltage to the xenon tube; a drive unit controlled by the control unit and charging the capacitor; and a battery supplying power to the drive unit, a safety unit comprising first through third contact point parts (81, 82, 83), the first and second contact point parts (81,82) being disposed on left and right sides of a front end of the PCB and the third contact point part being provided on a rear end of the PCB, and in that the control unit controls an operation of the apparatus when: * a user makes contact with his hand with the third contact point part, and * a body part of a user to be involved with blood collection makes further contact with said first and second contact point parts, and * a user makes contact with his hand with the third contact point part, and * a body part of a user to be involved with blood collection makes further contact with said first and second contact point parts, and the display unit, the switch unit, the safety unit, the control unit are arranged on an upper surface of a PCB and the reflector (10, 10a), the xenon tube, the crystal rod, the focusing lens, the focusing lens installation part, the capacitor, the drive unit, and the battery are arranged on a rear surface of the PCB.