Introduction With the aging of the population in China, the prevalence of atopic dermatitis (AD) is high in the elderly patients. These patients usually have more comorbidities and they need more effective and safer treatments. Dupilumab is an anti-interleukin-4 (IL-4) receptor monoclonal antibody which was approved for the treatment of moderate to severe AD. Objective To investigate the efficacy and safety of dupilumab in elderly patients with moderate to severe AD. Methods A real world retrospective study was conducted. Elderly patients (60 years or older) with moderate-to-severe AD who treated with dupilumab were included. Eczema Area and Severity Index (EASI) score, Peak Pruritus Numerical Rating Scale (PP-NRS), EASI-50, EASI-75 and EASI-50 were evaluated. The efficacy in subgroups was also investigated. Results Fifty-eight patients were enrolled. The EASI score and PP-NRS score were significantly reduced at week 4, 16, 28 and 52 during dupilumab treatments. 91.2% and 79.4% of the patients achieved EASI-50 and EASI-75 at week 16, respectively. This results sustained across 52 weeks. 95.8% and 87.5% patients achieved EASI-50 and EASI-75 at week 52, respectively. Adverse events were reported in 10 (17.2%) patients and no severe adverse event was reported. Male,older age and moderate AD (EASI<21) was related to better efficacy of dupilumab. Conclusions This study demonstrated that dupilumab is an effective and safe treatment in elderly patients with AD.