Aminophylline and Ambroxol are two types of drugs that cannot be directly compared. Aminophylline belongs to the theophylline group of drugs, and its main effect is antispasmodic and asthma, which is useful in the treatment of chest tightness and wheezing symptoms caused by respiratory infections, chronic obstructive pulmonary disease, bronchial asthma and other related diseases. The drug can cause adverse reactions such as nausea, vomiting, agitation, increased heart rate, etc. It is contraindicated in allergy to the product, active peptic ulcers, and uncontrolled convulsive disorders. Ambroxol is a phlegm-modifying drug with the effect of diluting phlegm and promoting phlegm expulsion. In rare cases, it can lead to adverse reactions such as nausea, vomiting or allergic reactions, and is contraindicated in people who are allergic to the product, and is generally not recommended for use during pregnancy.