It is important to know the composition of Si Jun Zi Tang, which is composed of Ginseng, Atractylodes Macrocephala, Poria and Glycyrrhiza glabra. In which ginseng, Atractylodes macrocephala, Poria each 10g, licorice 6g, several herbs are put together in a casserole or enamel pot with five bowls of water. The medicine is first soaked for 20 minutes, then boil the water on high heat, and after boiling, simmer slowly on low heat. Cover with a lid for about 25-30 minutes. If there is a bowl of soup and herbs left in the pot, pour out this bowl and refill it with five bowls of water. Then after decocting another bowl for the same amount of time, blend the two bowls together, and the medicine is one pair. Take one bowl in the morning and one bowl in the evening, usually after meals. The above is how to decoct a pair of Si Jun Zi Tang.