There are many expectorant drugs for children's cough. For example, the commonly used cough with phlegm can be treated with Yitanjing, Compound Forcodine, and Compound dextromethorphan, which are all cough relieving and expectorant drugs. Others are specialized in resolving phlegm, such as ambroxol and Fulusi, which are all used for resolving phlegm. There is no cough ingredient in them, and they are all western medicines. There are also many traditional Chinese medicines and Chinese patent medicines, which are also used for relieving cough and resolving phlegm. For example, Xiaoqinglong Granule, Xuanfei Granule, Xiaoer Feire Zhike Oral Liquid, Xiaoer Kechuanling Oral Liquid, etc. are all cough relieving and resolving phlegm medicines with many varieties. But don't hear that many varieties and names are different, but the formulas in many medicines overlap. For example, the same ingredients are common in three traditional Chinese medicines. So when using Chinese patent medicine, choose one, not more than two. If taken more than two times, the ingredients may be repeated, the dosage will increase, which will have side effects on children, and it is not very safe. The use of Chinese patent medicine is best under the prescription of the doctor and the guidance of the pharmacist, including western medicine. Don't take a medicine for cough and phlegm. In fact, cough and phlegm are symptoms. Many diseases and different diseases will have cough and phlegm, so the first thing is to diagnose what is the reason, and the corresponding treatment is more effective.