Abstract:Objective: To explore the correlation between serum ferritin and neurological development. Methods: A total of 1003 children aged 6 to 18 months who underwent routine health care in the Children's Health Department of Guangdong Women And Children Hospital from January 1, 2018 to December 31, 2019 and their Chinese Child Development Scale were collected. (The new version of the Children's Heart Scale) measures the scores of the five ability regions. Results: Serum ferritin levels in boys from 6 to 18 months were lower than girls (38.38 ± 30.46 & 46.64 ± 37.34, p <0.001); the language development quotient of girls was higher than boys (94.99 ± 11.27 & 93.08 ± 11.18, p = 0.008); the developmental quotient of each ability area changes with age. The large-movement development quotient: 6 to 9 months of age, 9 to 12 months of age <12 to 18 months of age; adaptive ability development quotient: 6 to 9 months of age> 12 ~ 18 months old, 9-12 months old; Language development quotient: 6-9 months old> 9-12 months old> 12-18 months old; Social behavior development quotient: 6-9 months old> 9-12 months old> 12 to 18 months of age; there was no statistically significant correlation between serum ferritin concentration and the developmental quotient of each energy region in the past two months. Conclusions: It is necessary to pay more attention to the serum ferritin level and language development ability of boys. There is no statistically significant correlation between serum ferritin level and the development quotient of each energy region in the past two months.