Beijing ? China has banned television and radio ads for push-up bras, figure-enhancing underwear and sex toys in the communist government’s latest move to purge the nation’s airwaves of what it calls social pollution.

Regulators have already targeted ads using crude or suggestive language, behavior and images, tightening their grip on television and radio a few weeks ahead of a twice-a-decade Communist Party congress at which some new senior leaders will be appointed.

The latest move by the State Administration of Radio, Film and Television, or SARFT, also bans advertisements for sexual aids such as tonics that claim to boost performance in bed.

The notice indicated that regulators were concerned about lascivious imagery and outrageous or insupportable claims about some products’ benefits or effectiveness.

“Illegal ‘sexual medication’ advertisements and other harmful ads pose a grave threat to society,” said the SARFT notice, issued in the past week and posted on the administration’s Web site.