全球多个国家的儿童生长发育和营养学专家对＜2岁婴幼儿生长减缓（FG）的现有证据和指南进行综合回顾，发布了《生长减缓婴幼儿的追赶性生长：指导普通临床医师的专家共识（Catch-Up Growth in Infants and Young Children with Faltering Growth：Expert Opinion to Guide General Clinicians）》［以下简称为《FG 共识（2023版）》］。该共识进一步明确FG 定义，并对FG 患儿的诊断及管理提出重要建议。FG 患儿可被分为疾病相关与非疾病相关FG，并与各种不良影响有关，短期影响包括免疫反应受损、住院时间延长，长期影包括对学业和认知影响、身材矮小和社会经济结果等。《FG 共识（2023版）》强调对不同收入水平国家婴幼儿FG 的病因差异及管理策略不同，对FG 婴幼儿的临床实践具有较好指导意义。为了帮助临床医师更好地早期识别和规范管理FG 患儿，笔者拟就《FG 共识（2023 版）》关于FG、追赶生长（catch-up growth）及加速生长（growth acceleration）的定义，对不同收入水平国家的婴幼儿FG 特征、管理措施及诊疗与营养措施进行解读。

The international panel of experts on pediatric growth and nutrition，having reviewed and analyzed the existing evidence and guidelines on faltering growth（FG）in infants and young children under 2 years of age and published Catch-Up Growth in Infants and Young Children with Faltering Growth：Expert Opinion to Guide General Clinicians［hereinafter referred to as the FG Consensus（2023 Ed）］.It further clarifies the definition of FG and provides important recommendations for the diagnosis and management of children with FG.The FG Consensus（2023 Ed）emphasizes the differences in the etiology and management of FG infants and young children under 2 years in countries with different income levels，which is a good guide to the clinical practice of FG infants and young children under 2 years.In order to help clinicians better identify and standardize the management of children with FG at an early stage，the authors intend to interpret the definitions of FG，catch-up growth and growth acceleration in the FG Consensus（2023 Ed），and the characteristics of infants and young children with FG，management measures，and diagnostic and nutritional measures in countries with different income levels.