Present and retired party members and government employees in the Tibet Autonomous Region are covered by the regulation, it said.
After the March unrest in Tibet, China has persistently attacked the self-exiled Tibetan leader based in India and his supporters, whom Beijing calls "the Dalai clique", accusing them of having orchestrated the violence.
The Dalai Lama who fled to India after a failed uprising against Chinese rule in 1959 has also been accused of trying to "sabotage" the Beijing Olympic Games. The Nobel laureate has denied both charges.
Under intense global pressure ahead of the Olympic Games, Chinese government representatives and envoys of the Dalai Lama held two rounds of fence-mending talks, including the latest in the first week of July, but failed to make any headway.