Coughing in the second month of pregnancy has an impact on the baby, and the impact is mainly reflected in the following two aspects: First, coughing increases abdominal pressure, which may cause uterine contractions and is therefore able to cause miscarriage. When the patient has a cough, it must be actively treated. Secondly, patients coughing are due to some inflammatory diseases, or because of infections by pathogens such as mycoplasma. If the cough is simple and confined to the local area, these infections do not have much effect on the fetus. If the inflammation spreads and causes pneumonia, generalized fever or sepsis, etc., this condition can affect the baby’s development and may cause various risks such as cessation of embryonic development or malformation of the embryonic development. Therefore, when a patient develops a cough in the second trimester of pregnancy, it is important to undergo a detailed examination and to provide serious treatment.