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Objective Based on the health big data platform of Yichang city, to analyze the characteristics of allergic diseases of children born in medical institutions from 2017 to 2022 in Yichang city, and to clarify the distribution of allergic diseases among children in Yichang city. Methods Statistical analysis was conducted based on the records of born children with allergic diseases in the outpatient clinic of urban comprehensive medical institutions from 2017 to 2022 in the big data cloud platform of Yichang city. Results The number of visits of male children was 68 707, more than that of female children, and the number of visits had been increasing since 2017. The highest number of hospital visits was 46 190 (37.86%) among children of 0-1 year old, of which the highest number of visits was 3 331 (13.74%) among children of two months. Atopic dermatitis/eczema and allergic rhinitis had a higher number of visits with 46 156 and 14 388 visits, respectively. The age of onset of atopic dermatitis was earlier, with the age of first consultation being 0.42 years, and the age of onset was earlier in males than in females. Atopic dermatitis/eczema and allergic rhinitis were the most common multimorbidities. Conclusion For children with atopic dermatitis/eczema and/or allergic rhinitis, the focus is on the development of concomitant diseases to further interrupt the allergic process and promote early detection, prevention and treatment of the disease. [ABSTRACT FROM AUTHOR]