Australian officials said that two objects possibly related to the search had been spotted by satellite in the remote southern Indian Ocean.
But Wen Wancheng refused to accept the announcement meant he had lost his son, who was a passenger on the flight.
"My son is still alive. My son is still alive," said the 63-year-old from Shandong province. "I don't believe the news."
There are 153 Chinese citizens on board flight MH370, whose relatives have been waiting for news at the Lido hotel in Beijing.
Zhao Chunzeng, who declined to identify his relative on board, said families were seeking a confirmed discovery.
"We are waiting, just waiting and we can't respond to news until it is definitely confirmed," Zhao told AFP.
AFP