To study the efficacy of Shenmai Injection（参麦注射液）in the treatment of diabetic lung injury and its effect on lung function and inflammatory factors in patients with diabetic lung injury.

A total of 110 patients with diabetic lung injury treated in the emergency department of the hospital from August 2021 to January 2024 were selected and divided into two groups according to the random number table method，with 55 cases in each group. The patients in the control group were treated with conventional western medicine，and those in the observation group were treated with Shenmai Injection on the basis of the control group for 10 days. The effective rate of traditional Chinese medicine（TCM）syndromes，lung function［forced vital capacity（FVC），oxygenation index（OI），static compliance（Cst）］，inflammatory factors［tumor necrosis factor-α（TNF-α），interleukin（IL）-6，IL-10］ and incidence of adverse reactions between two groups of patients.

The total effective rates of the observation group and the control group were 96.36% （53/55）and 83.64%（46/55），respectively. The rate of the observation group was higher than that of the control group and the difference was statistically significant（P<0.05）. After treatment，the values of FVC，OI and Cst of both groups significantly increased，and the values of the observation group were higher than those of the control group（P<0.05）. After treatment，the serum levels of TNF-α，IL-6 and IL-10 in both groups were significantly reduced，and the levels of the observation group were lower than those of the control group（P<0.05）. No serious adverse reactions occurred in either group.

Shenmai Injection is effective in the treatment of diabetic lung injury. It can effectively improve the lung function of patients，reduce the levels of inflammatory factors，and promote the relief of symptoms. It is a safe and effective treatment plan.