We present results of SED fitting for LBGs at z~5 in the GOODS-N and its flanking fields. Among ~600 LBGs, we select ~100 objects which are uncontaminated in IRAC images by eye inspection. Using publicly available IRAC images in the GOODS-N and IRAC images we observed in the flanking fields, we constructed the rest-frame UV to optical SEDs and made SED fittings for the sub-sample of LBGs. We compare the distributions of the derived parameters (stellar masses, ages, color excesses, and star formation rates) with those of z=2-3 LBG sample. The comparisons show that the stellar masses increase from z~5 to z=2-3, and the ages are relatively younger that those of z=2-3 LBGs. The color excesses is larger, and the star formation rates are larger than those of z=2-3 LBGs. We also present comparisons of our results with other observations at z=5-6.
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