Always coughing in pregnancy is particularly susceptible to respiratory infections, such as inflammatory diseases of the upper respiratory tract, also called colds, due to the low immunity of women during pregnancy. In addition, it is possible that the respiratory tract reacts to external substances in an allergic, irritating manner, for example, allergies to airborne dust mites, pollen, etc. may also cause coughing symptoms, so the patient should be analyzed etiologically. If it is a cold, it can be treated with traditional Chinese medicine or dietary therapy. If it is an allergy to an external substance, such as pollen allergy, one should try to minimize indoor planting of flowers, keep the indoor air fresh, and reduce the contact with pets, and the cough will be alleviated.