There was once a tattoo custom, called “hajichi” in the Ryukyu Islands. Considering the patterns and purposes of hajichi from the culture science perspective and combining with the history of Ryukyu Islands for root and truth-seeking exploration seemingly help to conclude that Yunnan Province in China is possibly the place of origin of hajichi custom. The tattoo culture in Yunnan may spread to Ryukyu and further roots and grows there based on the exchange convenience in the age of great navigation in East Asia.