This study analyzed and reconstructed the climatic features of the early Choseon Dynasty on the basis of weather records appeared in the historical documents. Weather records in the Choseon Wangjo-Shillok (조선왕조실록) were used as main sources. Climatic features such as rainfall, snow, wind, fog, frost, hail, drought, flood, thunder and lightning, thunderbolt, were analyzed and interpreted during 27 years (1392-1418). During the early Choseon Dynasty, abnormal climatic change was due to effects of the Little Ice Age. In the first place, I came to know that the fearful natural disasters such as severe droughts and heavy rain and floods in the early Choseon Dynasty were caused to famines in local areas or national scale. Accordingly, The king refrained from luxurious food and drink, released prisoners or reduced their sentence as a sign of his benevolence. And so, the king ordered the official servants to act alms policy for a benevolent administration.