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Neoadjuvant chemoimmunotherapy is becoming an increasingly important part of the management of lung cancer to facilitate surgical resection. This study aimed to summarize the treatment‐related adverse events (TRAEs) and wound complications of neoadjuvant chemoimmunotherapy in non‐small cell lung cancer (NSCLC). Eligible studies of neoadjuvant chemoimmunotherapy for NSCLC were identified from PubMed, Embase and Web of Science. The endpoints mainly included TRAEs and wound complications. Stata18 software was used for statistical analysis with p < 0.05 considered statistically significant. Twenty studies including a total of 1072 patients were eligible for this study. Among the patients who received neoadjuvant chemoimmunotherapy, the pooled prevalence of any grade TRAEs was 77% (95% confidence interval [CI] [0.64–0.86]), grade 1–2 TRAEs was 77% (95% CI [0.58–0.89]) and grade ≥3 TRAEs was 26% (95% CI [0.16–0.38]). Surgery‐related complications rate was 22% (95% CI [0.14–0.33]). Among the wound complications, the pooled rate of air leakage was 10% (95% CI [0.04–0.23]), pulmonary/wound infection was 8% (95% CI [0.05–0.13]), bronchopleural fistula was 8% (95% CI [0.02–0.27]), bronchopulmonary haemorrhage was 3% (95% CI [0.01–0.05]), pneumonia was 5% (95% CI [0.02–0.10]), pulmonary embolism was 1% (95% CI [0.01–0.03]), pleural effusion was 7% (95% CI [0.03–0.14]) and chylothorax was 4% (95% CI [0.02–0.09]). Overall, neoadjuvant chemoimmunotherapy in NSCLC results a high incidence of grade 1–2 TRAEs but a low risk of increasing the incidence of ≥3 grade TRAEs and wound complications. These results need to be confirmed by more large‐scale prospective randomized controlled trials and studies. [ABSTRACT FROM AUTHOR]