A small amount of cayenne pepper does not affect breastfeeding, but if a large amount of cayenne pepper is consumed, a four-hour interval should be allowed before breastfeeding. A small amount of chili peppers can promote the appetite of lactating women and protect them from the cold, with less impact on the baby. However, chili peppers are stimulating and their consumption can lead to a reduction in milk production, stimulation of the gastrointestinal tract leading to constipation and diarrhea, and may cause dry stools and constipation in infants, and even allergies in infants. Therefore, breastfeeding women should try to avoid excessive stimulating foods, including spicy, cold and other stimulating foods, to avoid adverse effects on themselves and their babies. In addition, breastfeeding women should also pay attention to a light diet, strengthen nutrition, have a balanced diet, supplement foods rich in coarse fiber and ensure protein intake.