The last missing miner was found dead in the shaft of Gaokeng Coal Mine in Pingxiang City of Jiangxi Province, state-run Xinhua news agency reported.
In addition, 11 injured miners are still under medical treatment at a local hospital.
Of the six critically injured, five suffered burns to over 50 per cent of their bodies.
Thirty-eight miners were working in the mine when the accident occurred yesterday. Twenty-three had escaped on their own or had been pulled out to safety.
This is the second mine blast in China since August 29 when 44 miners were killed in a similar accident at a mine in Sichuan province.
Two miners remain trapped in the Xiaojiawan Coal Mine in Panzhihua City, some 750 kilometres southwest of Chengdu, the provincial capital.
The mine was struck by a gas blast trapping about a third of the 154 miners who were working underground.
Fifty-four workers were injured, 17 of them seriously.
