Jaundice will not darken the skin after irradiation with blue light, but it may cause the patient to have an adverse reaction of bronzing of the skin. Exposure to blue light is a medical treatment for neonatal jaundice, which can be effectively treated by irradiation of blue light. This method of irradiation of blue light is not the same as exposure to the sun, so it will not cause the patient’s skin to darken. However, after exposure to blue light, the patient’s skin may turn blue. When irradiating blue light, attention should be paid to the patient’s eyes for protection, you can wear an eye mask and other items to avoid damage to the patient’s eyes. It is also important to pay attention to newborn hydration to avoid dehydration. When irradiating blue light, if the patient’s body has an adverse reaction, the patient should immediately stop irradiating blue light to avoid aggravating the condition.