Fan, male, 4 years old, diagnosed on August 24, 1984. Fever for 3 days, vomiting, anorexia, yellow urine, loose stool, whole body yellow, bright yellow like the color of an orange, wiry and rapid pulse, yellow greasy tongue coating, liver enlargement 3 cm below the right rib, soft texture with mild tenderness, abnormal liver function tests. Prescribed Gardenia and Phellodendron Decoction with modifications, including Gardenia, Phellodendron Bark, Alisma, Polyporus, Virgate Wormwood, Six-to-One Powder, Millet Sprout, etc. After 5 days, jaundice subsided, clinical symptoms significantly improved. After 21 days, liver function tests returned to normal, liver enlargement reduced to 0.5 cm below the right rib, no tenderness.