Mary Kom defeated Japan's Tsubasa Komura in a unanimous 5-0 verdict to make the summit clash for the fifth time in her six appearances at the event.
Should she go on to win the final, the Indian would be wining her first gold Asian gold medal in the 48kg category.
The 35-year-old Rajya Sabha MP, who is also a former Olympic bronze-medallist, returned to her preferred weight category after five years of competing in 51kg, which was made an Olympic category in 2012.
Mary Kom's patience with Komura's tactics ran out in the second round and she increased the pace and ferocity of her own attacks to unsettle the Japanese.
The shell guard to stave off Komura's feeble right straights ensured that the Manipuri hardly took any blow in what turned out to be a lopsioded contest.