Dilated cardiomyopathy patients with cold can aggravate the disease, induce aggravation of heart failure and arrhythmia, and even lead to life-threatening in serious cases, so we should pay great attention to the treatment as follows: 1, actively control the infection; 2, basic treatment: including bed rest, light diet, appropriate water; 3, etiological treatment: antiviral, antibacterial, anti-inflammatory; 4, symptomatic treatment: oxygen, antipyretic, pain relief, asthma, cough, cough, etc.; 5, to prevent the aggravation of heart failure, standardized, intensive anti-heart failure and arrhythmia treatment, more severe cases as soon as possible to the respiratory and cardiac specialist. 5. prevent the aggravation of heart failure, standardize and strengthen the anti-heart failure and arrhythmia treatment, and consult respiratory and cardiac specialists as soon as possible for more serious cases, and if necessary, hospitalization. The main thing is not only to control the cold, but also to prevent it and increase the resistance.