The Washington-based International Campaign for Tibet said one of the monks self-immolated on Monday outside a temple in Luqu county in northwestern Gansu province.
The other set himself ablaze on Sunday at a monastery in neighbouring Qinghai province, it added.
According to New.com.au, the latest burning protests bring the total since 2009 to 106.
The protests have come despite an intensified crackdown in Tibetan areas by Chinese authorities hoping to stop the self-immolations.
Authorities have detained and jailed Tibetans they accuse of helping others self-immolate, an act that the Chinese government now considers a crime.
Sydney: Two Tibetan monks in their early twenties have reportedly set themselves on fire in protest against China's religious and political oppression.
First Published: Tuesday, February 26, 2013, 11:59