Clinical and Experimental Pediatrics (Clin Exp Pediatr) is an international, peer-reviewed monthly journal of medicine published in English. It is the official publication of the Korean Pediatric Society, established in 1945. The first issue was published in 1958 as the Journal of the Korean Pediatric Society (ISSN: 0560-3560) with a Korean title of SoAKwa. Since then, it has been published without interruption and has contributed tremendously to the development of pediatric science in Korea. We changed the title of our journal to the Korean Journal of Pediatrics (pISSN: 1738-1061) from 2004 to 2019 and included an English version. Later, the Korean Pediatric Society changed the official name of the journal to Clinical and Experimental Pediatrics in January 2020, in line with the international status of the Korean Pediatric Society. Clin Exp Pediatr is published as an English journal, beginning with Issue 1, Volume 63, in 2020 published consecutively with Issue 12, Volume 62, in 2019 of the Korean Journal of Pediatrics to facilitate its international competitiveness. Clin Exp Pediatr is indexed in PubMed, PubMed Central, SCOPUS, EMBASE, EBSCO, CAS, DOAJ, KoreaMed, KoreaMed Synapse, KoMCI, MedRIC, RISS, WPRIM, WorldWideScience.org, Crossref.org, and Google Scholar.