为探讨碘缺乏病（IDD）的亚临床类型，在IDD病区对737名非克汀病儿童中部分人作智测、电测听、脑电图、脑诱发电位、X线骨龄判断及血清TSH测定等检查。结果显示病区非克汀病儿童中的轻度低智、轻度听力减退及脑诱发电位的异常检出率分别高于非病区儿童。据主要亚临床表现，IDD亚临床型可能包括3型，即亚临床地方性克汀病、缺碘性轻度低智及缺碘性轻度听力减退。 In order to explore the subclinical type of iodine deficiency disease (IDD), 737 children with non-cretinism in IDD ward were subjected to some tests, including electroencephalogram, electroencephalogram, electroencephalogram, brain evoked potentials, X- TSH test and other tests. The results showed that the prevalence of mild low intelligence, mild hearing loss and abnormal brain evoked potentials in children with non-cretinism in the ward were higher than those in non-ward children respectively. According to the major subclinical manifestations, subclinical IDD may include type 3, subclinical endemic cretinism, mild hypo- iodine deficiency and iodine-deficient mild hearing loss.