Chen Pi side effects will have to abnormal vomiting, Chen Pi for the promotion of digestion, improve the function of the gastrointestinal tract of the problem, mild stimulating effect of digestion, can promote the secretion of digestive juices, to exclude the accumulation of gas in the intestinal tract, for the drug itself volatile oil expectorant effect of the virtual, for the yin deficiency of dry cough patients should not be used. Self-expired sweating syndrome, vomiting blood and pox rash enema is contraindicated.