The effect of nebulization on the fetus depends on the drugs used for nebulization. Nebulization treatment during pregnancy can effectively shorten the course of the disease, and if the drugs used are not appropriate, it can easily affect the fetal development, so it is necessary to use the drugs reasonably under the guidance of the doctor when nebulizing during pregnancy, and use drugs with less side effects, which can reduce the effect on the fetus. If you have a respiratory infection, you can use drugs such as amoxicillin and ambroxol to nebulize the phlegm and cough, but using drugs with greater side effects such as gentamicin and terbutaline during pregnancy may have an adverse effect on the fetus and can easily affect fetal development. The use of drugs during pregnancy must be cautious, usually pay attention to drink more water to strengthen the diet nutrition, enhance body resistance can prevent disease.