With the development of social economy, more and more high-tech has been invented and widely used in our daily life. X-ray screening technology is one of them. The emergence of X-ray has brought many benefits to our life. For example, with its help, the public safety system has been improved and industry has developed more rapidly. So, what kind of technology do you know about X-ray screening? What is the working principle of this technology? What areas does it apply to? Here, we briefly introduce this technology, hoping to help you better understand the X-ray screening technology.