Iodine is an essential component for synthesis of tyroid hormone. In the areas ofiodine deficiency iodine intake was also obtained from providing iodine capsulesand fortification of salt. Salt is recommended is 30-80ppm. From the median ofUrine Iodine Ecretion that get from survey 2003 showed there are low iodineintake but also there are risk for the occurence of excess. The aim of this paperis to know the effects of salt with that derived from the standard dose of 20-30ppm to TSH serum values in iodine deficient areas. This research is a quasiexperimental where there are intervention with iodized salt 20-30 ppm in thecommunity of deficiency area. The design of this study is a trial pre and posttime series design for 4 month. The population in the study of all primary schoolchildren in the deficiency area. Sample is 4-5 grade school children at elementaryare selected. The number of sample is 70. Data analysis using non-parametrictest for paired samples. The results of this stu=dy is that TSH values before andafter the intervention showed significantly different results with p <0.05. TSH meanvalues between before giving salt intervention with salt after the administration ofthe intervention, namely from 2.62 to 1.39.