The present invention for the X-ray generating apparatus, the main object of the invention is prepared in the tube into the tube of an aluminum material, and to open and close the inside and to form a vacuum production is easy, and to enable the replacement of internal components, It is to enable semi-permanently. X-ray generation of the present invention to achieve the purposes for which bar tube but internal to the X-ray generating mechanism 140 to the inside, the inside has a holding, the target 141 is the center of the top face formed into a cylindrical shape, insertion end (111 other side ) the first part half 110, while the inside is formed in a cylindrical shape, the receiving end 121 so that the insertion end 111 of the first half of half bodies 110 can be fitted is provided, the connection for high-voltage cables to the rear end surface consisting of the latter part being provided with a 122 half body 120; Providing a vacuum means provided at one side of the latter half bodies 120, 150; And the insertion end 111 and fastening means 130 thereof for mutual coupling in the receiving state assembled into the end 121 of the latter half 120 of the one front part half 110; X-ray generation tube, including ( 100) to the configuration.