According to the doctor's inquiry, honeysuckle and dandelion will cough after soaking in water together, because these two herbs are cold medicines, and taking too much will cause gastrointestinal discomfort, diarrhea, abdominal pain, vomiting, nausea and other symptoms. In addition, honeysuckle and dandelion have the efficacy of clearing away heat and toxic materials, and are effective in treating heat-related diseases. However, if the cough is caused by heat-related diseases, the combination of honeysuckle and dandelion will cause cough or aggravate cough symptoms. Therefore, when taking honeysuckle and dandelion, we should take them in moderation according to personal physique and specific symptoms, and pay attention to the cooperation with other drugs to avoid adverse reactions.