The "Infant Health Checkup Service" from "Kosodate DX®", a digital transformation support service for local government child-rearing initiatives provided by BoshiMo Inc., has been fully implemented in Hiroshima City, Hiroshima Prefecture, and will commence operation on July 1 (Wed). In Hiroshima City, as a child-rearing support measure utilizing digital technology, the mother and child handbook app "BoshiMo" was introduced as the "Hiroshima Child-Rearing Support App" in October 2018. Since April 2025, the "Questionnaire Service" of "Kosodate DX", available as an additional feature of "BoshiMo", has been provided. This initiative will digitize the procedures related to infant health checkups (4-month, 18-month, and 3-year-old checkups) through "BoshiMo". This will allow guardians to input and submit questionnaires and check their health checkup results via the app. ◆Digitizing Infant Health Checkups in Hiroshima City, Hiroshima Prefecture, where the community collaborates and cooperates to support child-rearing families! Hiroshima City aims to create an environment where children can grow up healthy in mind and body, and where guardians can experience the joys of child-rearing. To achieve this, the city is promoting initiatives to support child-rearing families through collaboration and cooperation within the community. As part of these measures, the mother and child handbook app "BoshiMo" was introduced as the "Hiroshima Child-Rearing Support App" in October 2018, and the "Questionnaire Service" of "Kosodate DX", available as an additional feature of "BoshiMo", has been provided since April 2025. By promoting digitization in procedures related to maternal and child health, the city aims to reduce the burden on child-rearing families and improve convenience. This time, by introducing the "Infant Health Checkup Service" of "Kosodate DX" and digitizing the procedures related to infant health checkups, we aim to create a system that allows guardians to complete procedur