To analyze the incidence and characteristics of cutaneous adverse events (CAEs) in non-small-cell lung cancer patients treated with PD-1 inhibitor-based therapy. A total of 150 non-small-cell lung cancer patients under PD-1 inhibitor-based therapy from February 2018 to September 2021 were included and were followed up with regularly. Over one-half of patients (88/150; 58.7%) had CAEs. Reactive cutaneous capillary endothelial proliferation, maculopapular rash and pruritus were the most common CAEs. The incidences of CAEs were 50.0 (18/36), 67.0 (50/75) and 51.3% (20/39) with PD-1 inhibitor monotherapy, PD-1 inhibitor in combination with chemotherapy and PD-1 inhibitor in combination with antivascular/targeted therapy, respectively. CAEs occur frequently in PD-1 inhibitor-based therapy but are generally tolerable.