Activated carbon was prepared from black sugar by chemical activation with NaOH. The preparation process was carried out by carbonization, chemical activation, washing, and dry. The effect of the carbonization temperature and chemical ratio on the production cost is so strong that in the region of influence, it is recommended to use possible low temperature and chemical ratio. Optimal carbonization temperature and time were found to be 500 ℃ and 1hr, respectively. N₂-BET surface areas were measured as about 478 ~ 574 m²/g with 100 ~ 300 wt% chemical ratio of NaOH. The use of activated carbon made from black sugar allows for the efficient removal of organic pollutants in waste water.