Shanshan Feng fired a six-under-par 66 to win the Dubai Ladies Masters for the third time with a tournament record margin of 12 shots.
China's Feng 26, completed the double of winning the season-ending championship and the Order of Merit on the Ladies European Tour.
The world number six ended on 21 under and Thailand's Thidapa Suwannapura finished second on nine under.
England's Melissa Reid was a shot further back in third.
Derby-based Reid, 28, bogeyed the first hole, but after securing pars across the rest of the front nine, she rallied to sink four birdies on the back nine, for a final round of 69.
However, Feng was in superlative form and after starting the final day with a five-stroke lead after three successive rounds of 67, she extended her advantage when she hit three birdies in four holes from the second.
