Diarrhea after taking Huo Xiang Zheng Qi Liquid may be a manifestation of drug allergy, and may also be a manifestation of indigestion caused by spleen and stomach deficiency or taking tonic Chinese medicines at the same time. Patchouli Zhengqi Liquid is a kind of proprietary Chinese medicine, which has the effect of relieving surface dampness (relieving the evil of external sensation and getting rid of the dampness in the body), regulating qi and neutralizing the middle (regulating the qi of the spleen and stomach, so as to make the function of the spleen and stomach smooth), and is mainly suitable for the treatment of colds and flu caused by external wind-cold and summer-dampness. Haoxiang Zhengqi Liquid is cold and cool, if the patient has both spleen and stomach deficiency, diarrhea symptoms may occur after taking it. Allergic or low immunity people, especially those who are allergic to Huoxiang Zhengqi Liquid, will have an allergic reaction after taking the drug, showing indigestion, diarrhea symptoms; at the same time, if you take the drug at the same time to take tonic traditional Chinese medicine, the body can not be absorbed may also appear diarrhea discomfort. It is recommended to consult a doctor before taking Huo Xiang Zheng Qi Liquid, to understand the precautions, adverse reactions and contraindications of the drug, to ensure the safety of the drug. During the period of taking medication, it is advisable to take a light diet, avoid spicy, greasy food.