The mayor of Yantai city was quoted by state broadcaster CCTV as confirming the deaths. One miner remains unaccounted for.
The miners became trapped in the Hushan mine when the entrance to the tunnel collapsed after a blast on 10 January.
There was joy on Sunday after the 11 were brought to the surface.
"From Sunday afternoon to this afternoon, rescue workers have not stopped searching, and found a further nine trapped miners who unfortunately all died," according to foreign reports.
"Along with one miner who died on Thursday, the bodies of the nine deceased miners were all lifted out of the mine."