The plastic film on the mattress may have a certain impact on pregnant women, which may lead to localized humidity, but also easy to breed mites. Purchase of mattresses will have a layer of plastic film, this is for the hygiene of the mattress, after the purchase of the plastic film should be torn off, otherwise it will lead to the mattress is not breathable, if it is a hot summer, sweating more, the mattress will become damp and wet, uncomfortable situation. If the mattress has a layer of plastic film for a long time, the mattress is damp and wet for a long time, especially suitable for the growth of mites, mites reproduce in large quantities, may cause skin problems, acne and so on, in addition, if the pregnant woman is allergic to mites, but also prone to allergic reactions. The plastic film on the mattress may have a certain impact on pregnant women, so after the purchase of the mattress, you should tear off the plastic film in a timely manner, usually pay attention to keep the mattress clean and hygienic, it is best to clean the mattress on a regular basis, you can often sunbathe the mattress under the sun.