Houston Rockets' All-star center Yao Ming says he has been treated unfairly in an unprecedented attack by the country's official sports newspaper, China Sports Daily.

The newspaper of the General Administration of Sports on Monday hit out at Yao for "being privileged" and taking too much time off to recover from injury.

"No matter how lofty public welfare activities are, they can't be allowed to take first place in a player's life," the paper added, citing Yao's recent promotion of the Special Olympic Games in Shanghai. "No matter how sweet personal life is, it can't be compared to the exultation of capturing glory for one's nation."

"I know Chinese law protects people's right of speech but I feel this is unfair on me," Yao told China Daily in Beijing. "I entered the national team at the age of 18 and have competed for the national team for 10 years. I promise I have played with 100 per cent focus every year. The team are witnesses to my improvement and also my commitment."