The duration of treatment for neonatal jaundice varies according to the condition and needs to be assessed by a doctor, usually taking 1~3 days. Jaundice is a common manifestation in the neonatal period, mostly appearing 2~3 days after birth. Most of them are physiological factors and can be relieved on their own, while in a few cases, it will develop into hyperbilirubinemia, or even bilirubin encephalopathy and other serious complications. Light therapy includes continuous irradiation, intermittent irradiation and other kinds. Continuous irradiation usually requires 24 hours of irradiation, intermittent irradiation usually requires 10-12h, and intermittent irradiation 14-12h. Usually it takes 1~3 days. Blood bilirubin levels need to be checked during the treatment period. If the bilirubin level recovers, the treatment can be terminated after determining that there is no rebound phenomenon. If there is a rebound and the bilirubin level exceeds the pre-treatment level, another phototherapy session is required. The above treatment duration can be used as a guideline, but the exact duration needs to be adjusted according to the bilirubin level, etc. It is recommended to follow the doctor’s instructions. If the serum bilirubin level reaches the level that warrants treatment such as blood transfusion, blood transfusion may be required. Phototherapy should be carried out in a specialized medical institution, and the occurrence of jaundice requires prompt medical attention and targeted treatment under the guidance of a doctor.