Pakistan Women, after winning the toss, put China in to bat first, who were all out for 37 in 19 overs.
Off spinner Nida Dar bowled a magical spell and took four wickets conceding 7 runs in her three overs.
She was well supported by Bismah Mahroof, who dismissed 2 batsmen while Sana Mir and Asmavia Iqbal took 1 wicket each.
Pakistan Women chased the target in 8-over at the loss of one wicket. Javeria Khan scored unbeaten 21 while Bismah Maroof made 13*.
With the victory Pakistan are through to the final of the Incheon Asian Games to face Bangladesh, where they will defend their gold medal from Guangzhou in 2010.