These protests were much smaller than previous anti-French rallies
Hundreds of people have staged protests in four Chinese cities against the French supermarket chain Carrefour.
Demonstrators carried banners opposing Tibetan independence and supporting the Olympic Games - which will be held in Beijing in August.
Carrefour became a target for activists in China after the Olympic torch relay was disrupted by pro-Tibetan protesters in the French capital, Paris.
The supermarket has issued a statement saying it is not involved in politics.
In April there was a rash of anti-French protests focusing on Carrefour stores, following the Olympic torch's difficult passage through Paris.
A pro-Tibetan protester had tried to snatch the torch from Paralympian fencer Jin Jing during the Paris leg of the relay.
The incident received huge coverage in China's state-run media, and rumours began to circulate on web forums that Carrefour gave funding to pro-Tibetan groups - which it denies.
During April there were protests outside Carrefour stores involving thousands of people in a dozen Chinese cities.
The authorities have been calling for calm in recent weeks.
But placard-waving protesters gathered outside Carrefour stores in south-eastern city of Fuzhou, Shenyang in the north-east, and Changsha, capital of the central province of Hunan.
The BBC's Dan Griffiths, in Beijing, says a handful of protesters have been detained outside one store in the capital.
He says the latest protests are much smaller than previous demonstrations against Carrefour.