close epithelial cells initiate a tiny tube of ionizing radiation for the treatment of cancer. Ultra compact cathode electron beam tube of ionizing radiation for the treatment of squamous cell carcinoma is close to releasing the primary radiation beam causes generation of ionizing radiation for the treatment And are spaced apart to form a hollow cylindrical negative electrode is inserted into the compact electron beam focused on a hollow gate electrode provided The miniature cathode and the electron beam is focused to a gate electrode are spaced apart from the installation, the anode is a high voltage electron beam generated by the electron beam belonging to group the cathode is an electron beam Vacuum is provided inside the air outlet is connected with a high vacuum pump to be maintained at a high vacuum exhaust, the end face of the ceramic insulator and the cathode wherein the electron beam focused ultra-gate electrode is bonded, the other side surface of the vacuum is maintained inside the Electron beam chamber bonded to ground so that the same potential as the anode and the electron beam Is formed in a cylindrical shape, the electron beam is an electron beam passing through the beam transport anode X-ray tube is transported to a target portion in a vacuum atmosphere Surrounding the electron beam transport tube one end side opening diameter, steered lens for adjusting the beam direction of the take-off Solenoid focusing lens for adjusting the size of the take-back of the electron beam is installed in the steering lens The X-ray target portion composed of the X-ray window for the steering lens and the focusing lens solenoid size and a pull-out direction is controlled by the electron beam collision with the target and the X-ray radiated into the atmosphere caused by ionizing radiation, ionizing radiation for treatment And the X-ray target part and surrounding the outer periphery of the beam transport tube, cervix and vaginal wall and formed to be inserted into the