Objective To investigate the effects of mild insufficient iodine intake on thyroid function and autoantibodies in pregnant women,and to provide a basis for scientific supplementation of iodine to pregnant women.Methods From December 2015 to March 2016,Suixi County in Objective To investigate the effects of mild insufficient iodine intake on thyroid function and autoantibodies in pregnant women, and to provide a basis for scientific supplementation of iodine to pregnant women. Methods From December 2015 to March 2016, Suixi County in