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本文报告了对湖南省８６４４名儿童进行发育性发音障碍的流行病学调查结果，总时点患病率为０．７８％，各年龄阶段中以４—６岁组最高（２．１４％），随着年龄增加逐渐下降。男性（１．００％）高于女性（０．５２％），城市（０．６５％）与农村（０．９９％）无差别。患儿组产前损害病史及不良家庭教育方式高于对照组。
This paper reports the epidemiological investigation of 8644 children with developmental dysphoric disorder in Hunan Province. The prevalence of total dysphagia was 0.78%, the highest among all age groups (4-6%) was 2.14% , Gradually declining with age. Men (1.00%) were higher than women (0.52%), while cities (0.65%) did not differ from rural areas (0.99%). The history of prenatal damage and poor family education in children group were higher than those in control group.