During pregnancy, coughing and phlegm are first used with caution, especially during the critical period of development in March, when some drugs may affect the development of the fetus, but violent coughing may also cause fetal miscarriage or vaginal hemorrhage. If you have a cough with less phlegm, you can take oral cough suppressants, such as dioxopromethazine hydrochloride tablets to stop the cough. If you have a cough with more phlegm, which is sticky and not easy to cough up, you should take oral cough suppressants as well as phlegm treatment, and there are not many drugs to choose from. Avoid contact with irritating odors such as oil and smoke.