There is no fastest way to reduce infant jaundice, it can be categorized into physiological jaundice and pathological jaundice, which can be treated with more sunshine and blue light irradiation. 1. Physiological jaundice: physiological jaundice in infants generally does not need too much treatment and can be cured by itself. If there are conditions, you can give babies appropriate sun exposure, using the ultraviolet light in the sun, so that the unconjugated bilirubin can be discharged from the body as soon as possible. However, the sun exposure time should not be too long, and attention should be paid to protect the baby’s eyes. 2. Pathological jaundice: blue light irradiation can usually be used to convert unconjugated bilirubin into water-soluble bilirubin in the baby’s body, which can be excreted through urine, thus lowering the blood bilirubin. However, it should be noted that blue light irradiation to protect the baby’s eyes, can wear an eye mask, with a soft cloth to cover the baby’s perineum and anus and other parts. There are many causes of infant jaundice, it is recommended to go to the hospital in time for examination, to clarify the cause of the disease, under the guidance of the doctor to carry out targeted treatment, so as not to delay the condition.