Passengers will be inspected at the security screening area at the entrance of the subway station. In addition to the channel x-ray security screening machine for luggage, there are metal detectors and security gates held by security personnel. Therefore, many pregnant women are more worried about the radiation from so many x-ray security equipment. Daily subway commute, long time, radiation accumulation is inevitable, is it harmful to the body? Subway security equipment does have radiation, but this radiation is safe for the human body, even for pregnant women, weak people and other special groups; Are safe.

　　The security door is called a metal detection door. In fact, when we pass the security check at the train station and airport, it is the door. If you have metal parts on your body, you will beep when you pass by. The safety gate uses a weak magnetic field to induce metal, and the metal only reacts to the metal and has no effect on the human body. The same principle applies to metal detectors held by security personnel. However, the X-ray security inspection equipment used for baggage inspection does have radiation, so aluminum curtains and metal plates will be provided at the entrance and exit for safety protection to prevent radiation leakage. Some people are also worried that when items enter or leave the aluminum screen, there will inevitably be radiation. Is this radiation strong or weak? Will this have any effect?
    Don't worry about these traces of radiation, they can even be ignored, and they will not cause harm to human body. Normal physique is acceptable. Will it affect pregnant women in sensitive populations? It has no effect; the threshold of radiation-induced deformity effect is about 100 mSv, but compared with this, subway security screening radiation is very low. If the pregnant mother is not at ease or really cares, she can trouble the security staff to help put the bag and other items on the security check. The only thing to remind is that when transferring goods, you should not reach into the security device to pull the bag.
     Similarly, luggage entering the X-ray security inspection machine will also receive a certain dose of radiation, but this high-frequency electromagnetic wave has no radiation residue on the objects irradiated by it, so the food passing through the X-ray security inspection device will not affect people's consumption.