Block follows outbreak of chicken flu in Milan province.
Poultry products and eggs from Milan and Lombardy have been put on a black list by the Chinese special region of Hong Kong, reported Chinese media on 30 October.
The region had already imported some 1,300 tons of chicken meat and around 12,000 eggs from Italy in the first nine months of this year.
But after an outbreak of bird flu H5N8 in Milan province, the Chinese authorities took steps to block the trade after a warning note from the OIE-World Organisation for Animal Health, according to Chinese media.
Italian authorities told media that the Chinese had delivered a warning note in September, but that no further contact had been made until this week. That warning had referred to an outbreak near Lodi, a neighbouring province south-east of Milan. There was another outbreak in Cernusco sul Naviglio in Milan province, but health authorities said this was of minor importance.
In October, another small outbreak occurred in Sondrio, just over 100 km from Milan, but the birds were put down.