Now sits in 19th position in the world rankings, Kyrgios is still striving for the ATP Finals in London, which is only open to the world top eight players.
Nadal's win against Nick Kyrgios in the finals makes it 12 straight match wins and remains undefeated since he became number one on 21 August.
Nadal faced some restraint from Kyrgios at the start of the match, but the Australian star's challenge seemed to fade after he was docked a penalty point at the 2-5 stage of the first set. But after that Nadal sliced through the opposition to win the China Open for the first time since making his debut in Beijing in 2005. "He has everything to fight for nearly all the events of the year".
The win augurs well for the 16-time Grand Slam singles victor, who is bidding to finish as the year-end No. 1 for the fourth time.
"Just something came to my eye, that's all", said Nadal, who is chasing a sixth title this year.
"I have lot of respect for Nick", Nadal said. "The a year ago that I had the trophy with me was in 2005". It's a 500 event. Every title later in your career is more special than when you were younger. "He's one of the players with more talent on the tour". When I saw the draw at the beginning of the tournament, I knew that it will be very, very hard to have good chances here.
Emotional Simona Halep called it the best day of her life and targeted a maiden Grand Slam as she surged to number one in the world for the first time on Saturday.
"Finally I won this event again", said Nadal after his comprehensive win.