One month of pregnancy with a five-day infusion of of ofloxacin is generally not recommended, and further medical examination is recommended to determine whether or not it is possible. One month of pregnancy is the early stage of pregnancy, the stage is an important period for the development of various fetal systems. Such as the nervous system, bone development, brain development, spinal cord and other organs, if in this critical stage of organ development infusion of ofloxacin drug, easy to cause fetal malformation. Ofloxacin belongs to the quinolone class, which is a class C drug used during pregnancy. The mechanism of action of oxfloxacin is to inhibit bacterial DNA helicase, this type of drug has a strong affinity for bone and cartilage affecting fetal cartilage development, resulting in fetal skeletal dysplasia, is prohibited during pregnancy. One month of pregnancy infusion ofloxacin five days on the fetus is teratogenic possibility, generally not recommended to be. It is recommended to go to the obstetrics department of the hospital in time to follow the doctor’s instructions to determine.