If you have a cold during in vitro fertilization, if you have a mild cold and fever, you can take no medication, drink more water or make ginger tea and drink it. If you have a moderate cold, you can use Banlangen Flush or Cold and Flu Flush. For fever over 38 degrees, you need to use antipyretic medicine or fever suppositories. For cough, you can use cough suppressant, such as Niancian loquat cream. In case of severe cold, fever over 39 degrees, persistent and uncontrollable with medication, ovulation promotion needs to be terminated if necessary. If the symptoms of cold do not improve, the fresh transfer needs to be cancelled. Pre-transfer medication has no effect on the embryo, while post-transfer medication has an effect on the embryo.