The Sky Academy Sports Scholar had already stormed to gold in Saturday's 1,000m race and repeated the feat at the same distance a day later on the track that will be used for the 2018 Winter Olympics in Gangneung.
Christie finished in one minute 32.869 seconds ahead of China's Yihan Guo, slightly slower than the 1:29.39 the Scot clocked on Saturday.
It was the second weekend in a row that the 26-year-old has secured a double success, having won gold medals in both 500m races in Shanghai.
On her efforts in South Korea, Christie said: "It doesn't get better than that, it's amazing to be taking on these nations at their home venues.
"I like the new Olympic stadium and can't wait to be back here again".
Christie, who also won gold in November's season-opener in Calgary, Canada, is now in second place in the 1,000m world rankings behind Min Jeong Choi.
She remains top of the the table in the 500m world rankings despite opting out of competing in the 500m in this World Cup to focus on the longer distances.
The tour heads to Europe in February for back-to-back World Cups in Dresden and Minsk with the World Championships taking place in Rotterdam from March 10-12.
WHAT'S COMING UP FOR OUR SCHOLARS....
NOV 25 - DEC 22: Holly Bradshaw, South Africa training camp
FEB 3- 5, 2017: Elise Christie, World Cup short track speed skating in Dresden, Germany
FEB 10-12: Elise Christie, World Cup short track speed skating in Minsk, Belarus