The 41-year-old won the Thailand Golf Championship in December and will be in a confident mood of winning.
"I have always enjoyed playing in this tournament. It's a big event that attracts some of the world's leading players each year. Hopefully, I will be able to get the job done this time," Westwood told europeantour.com.
"I know the (Majlis) course well, and it's a good golf course. They set it up great. I know my game is good enough to win when I play well enough. That's what I try to do. After that it's out of your hands. All I can do is keep getting into contention."
Tournament organisers are also pleased to have Westwood at the event.
"Lee is a wonderful guy in every way and is a great ambassador of golf," said Mohamed Juma Buamaim, vice chairman and CEO of golf in Dubai.
"He has been competing regularly in our tournament since 1994 and that amply reflects on the bonds we share which is greater than just friendship.
"His presence brings special energy to any tournament. We look forward to welcoming Lee and wish him the very best," he added.