X-rays used in medicine are generated by the following requirements: 1, X-ray tube: a vacuum glass tube containing two electrodes: cathode and anode; 2, tungsten plate: high atomic number tungsten metal can be used to make the anode of the X-ray tube, a target material used to receive electron bombardment; 3, high-speed movement of electrons: high voltage is applied at both ends of the X-ray tube so that the electrons move at high speed. A special transformer can raise the life voltage to the required high voltage. After the tungsten plate is hit by the high-speed movement of electrons, the atoms of tungsten can be ionized into electrons to form X-rays.