Doxorubicin is a bronchodilator mainly used for bronchial asthma, chronic wheezing bronchitis and other breathing difficulties caused by bronchospasm. It may cause gastrointestinal reactions such as nausea, vomiting, upper abdominal pain, and other neurological side effects such as headache, insomnia, and irritability. Individual patients may also experience cardiovascular side effects such as tachycardia, arrhythmia, and paroxysmal spasms, and the drug may also cause shortness of breath, hyperglycemia, and proteinuria. Doxorubicin is a drug with large individual differences and a narrow therapeutic window, so it is important for patients to choose the best dose and dosing method according to the individual patient’s changing condition. It is advisable to monitor the blood concentration in patients who have the condition, which can reduce the risk of adverse reactions. In conclusion, doxorubicin may have side effects during use. It is important to closely monitor the changes in the patient’s condition while he or she is using it.