The campaign to reduce extravagance will spur upscale restaurants to eliminate waste, and refocus them on the mass-market, according to an expert.

"Some restaurants have seen revenues decline during the campaign, but it's also an opportunity to push them to improve their business structure," said Feng Enyuan, secretary-general of the China Cuisine Association.

Luxury dining and fine-wine sales have both seen a huge drop in business amid the nationwide frugality campaign, the Ministry of Commerce said on Wednesday.