Abstract Objective: To know the situation in changzhi of the iodine contents in the iodized salt of the residents,so as to privide scientific evidence for establishing and remedial measures.

• 目的：了解长治市实现消除碘缺乏病阶段目标后，长治市各县（市、区）居民户食用盐盐碘含量情况及存在问题。