President Xi issued the traditional military rallying call on Friday, during a session of the National People's Congress, China's annual parliament in Beijing, The Guardian reported.
The Chinese president called on officials to act to bring "lasting peace and stability" to the landlocked border region, which has a history of ethnic violence and terror attacks.
"Maintaining stability in Xinjiang is a political responsibility," President Xi said.
Stiff new anti-extremism regulations were being prepared, handing authorities special powers to deal with those deemed a terror threat, including the ability to hold "extremist leaders" in solitary confinement.
One senior official told the Global Times daily that in applying the new rules the government needed "to distinguish between ethnic habits and extremist practices".