Generally speaking, when the jaundice value of a newborn exceeds 9mg/dl within 24 hours of birth, 12mg/dl within 1 to 2 days, and 15mg/dl within 2 to 3 days, blue light irradiation is usually carried out in the clinic. The jaundice value of blue light irradiation varies according to the birth weight and age of the newborn. Generally speaking, if the jaundice value of normal birth weight newborns exceeds 9mg/dl within 24 hours; if the jaundice value of newborns within 1 to 2 days of birth exceeds 12mg/dl; and if the jaundice value of newborns between 2 and 3 days of birth exceeds 15mg/dl, then the clinic usually carries out the treatment of blue light irradiation. However, low birth weight babies, preterm babies, etc., need to be comprehensively formulated by the doctor in conjunction with the curve table of jaundice treatment.