The 23-year-old South Korean won her first race in 38.03 seconds but improved to 37.66 seconds in the second to take the title at a canter.
China’s Jing Yu recovered from sixth in the first heat to take silver, 0.43 seconds behind Lee, while Holland’s Thijsje Oenema took bronze.
While Lee eased to her crown it was not so comfortable for compatriot Tae-Bum Mo, who won the men’s 500m event by just 0.01 seconds.
Mo pipped Holland’s Michel Mulder to the gold with a total time of 1:09.64 minutes, with Finland’s Pekka Koskela taking bronze.
Despite seeing their Dutch skaters pipped to individual gold medals there was plenty for the home crowd to cheer about as Holland claimed the ladies team pursuit crown.
The Dutch team won in 2:59.70 minutes, Canada taking silver and Poland collecting bronze.
And it was the same story in the men’s team pursuit, Holland holding off the challenge of USA to take gold with Russia settling for bronze.