When a pregnant woman has a cough with phlegm, it is important to first find the cause of the onset and then take targeted treatment measures. In addition to the necessary medication, some dietary treatments can be used to treat coughs as appropriate. 1. When a mild cough is found, drink more plain water to properly relieve the cough symptoms. Doctors generally do not advocate the use of drugs to treat mild cold symptoms. 2. Boil water with pears, rock sugar and red dates and drink it. Cut the pear into dice with red dates first, and then add rock sugar and continue to boil, this method is simple and easy to do, drink a few cups a day will help treat cough with phlegm. 3, drink salt water. It has a good effect on relieving cough caused by bronchitis, pharyngitis and respiratory infections, and can play a preventive role. 4.Eat baked oranges. Put a hole in the bottom of the orange, put salt and bake it, bake it in the microwave for 15-20 minutes, and the skin can be soaked in water.