Equipment capable of generating X-rays can be categorized into industrial X-ray machines and medical X-ray machines. X-rays a short wavelength electromagnetic waves, is a human eye can not see, but can penetrate the object of the ray, the discoverer because it can not explain its principle, not known its nature, it borrowed the mathematical representation of the unknown number of “X” as a code name, known as “X” rays, because of its ability to penetrate. Because of its ability to penetrate, industrial and medical use of this feature plays a big role. 1. Industrial X-ray instrument: is used for automotive parts manufacturing defect detection, automotive wheel testing, sub-frame testing, hinge quality testing, etc., in order to ensure that the tested industrial products have a high strength; also commonly used X-rays for weld flaw detection, boiler weld flaw detection, weld flaw detection of aerospace parts, and so on. 2. Medical X-ray instrument: widely used in clinical diagnosis and treatment, mainly using its photosensitive effect, so that certain substances fluorescence, and can make the gas free characteristics. For example: X-ray chest fluoroscopy, abdominal plain film, cholecystography, gastrointestinal imaging and angiography and other examinations. However, it has a certain destructive effect on the cells of the organism, and it is necessary to take good personal protection.