Breastfeeding women can not use drugs in the case, try not to use drugs. Must use drugs, in the doctor’s instructions to carry out symptomatic treatment, the use of drugs need to be very careful, otherwise it is easy to bring adverse effects on the fetus. At present, some of the clinical drugs on the growth and development of infants and young children are unfavorable, and the mechanism of the immediate and long-term effects are unknown, some drugs have a certain teratogenic or disabling rate. When a drug reaches a certain blood level in the blood of a breastfeeding woman, it can be fed to the infant through breast milk, and adverse effects can occur in the infant’s body. If it is necessary to use a certain drug, must be under the guidance of a doctor, and according to the type of drug to determine the length of suspension of breastfeeding, do not self-medication.