Drinking Sijunzi soup diarrhea may be due to spoilage of the drug, adverse drug reactions, wrong way of taking the medicine and other reasons. You need to stop taking the medicine immediately and seek medical attention. 1. Taking Sijunzi soup can cause diarrhea after the drug has deteriorated. Due to improper storage or part of the drug exceeds the shelf life, the active ingredients of the drug are changed and diarrhea will occur after taking the soup. 2. Adverse reactions to Chinese medicines can lead to diarrhea. Si Jun Zi Tang contains a variety of ingredients, some of which will lead to intolerance of the patient’s body, and then diarrhea manifestation. 3. Taking the medicine in the wrong way can also lead to diarrhea. Si Jun Zi Tang should be taken half an hour after meals in the morning and evening, and should be taken warm. If taken on an empty stomach, or the temperature of the soup is too low, it can also lead to diarrhea. If diarrhea occurs after taking the medication, it is recommended to stop taking the medication and go to the hospital in a timely manner, with the help of the doctor to clarify the cause of the disease, and targeted treatment or adjustment of medication, do not delay the condition.