The correct time to take San Bai Tang is half an hour before or half an hour after meals. It has certain effects such as strengthening the spleen and stomach, nourishing stomach yin, etc., and is mainly used for treating weakness of the spleen and stomach. San Bai Tang is a traditional Chinese medicine formula composed of Rhizoma Atractylodis Macrocephalae, Rhizoma Cardamomum Cardamomum, Rhizoma Paeoniae Alba, and Radix et Rhizoma Glycyrrhizae, which is effective in strengthening the spleen and stomach, nourishing gastric yin, and activating menstruation and blood circulation, and is used for treating pain in the stomach and epigastrium due to weakness of the spleen and stomach, stuffy and uncomfortable feeling, and frequent belching. The correct time to take San Bai Tang is half an hour before or half an hour after meals, which is conducive to the absorption of the drug, the drug is recommended to be taken at a fixed time every day, and the interval between two times more than eight hours. The adverse reactions, contraindications and precautions of San Bai Tang are not yet clear; people with weak spleen and stomach should eat and drink easy-to-digest food during the treatment period, and should not overeat. San Bai Tang should be applied under the guidance of a Chinese medicine practitioner, and should not be used on its own.