The radiation problem of security X-ray machines can be divided into two aspects. One is a high-radiation station luggage security X-ray machine. Since this equipment is a multi-energy detection source and needs to penetrate thick steel plates when working, its radiation source has a heavy workload and will produce a certain amount of X-ray radiation. However, since the luggage security inspection machines are all treated with radiation protection, you cannot put your hands into the X-ray machine during luggage security inspection. Another type is what we usually call a medical X-ray machine. Since this kind of machine uses low energy, usually between 50 and 250 milliamps, it does not produce any radiation to the human body. This means that even if the doctor puts his hand into the machine, he will not be harmed.