SWAT policemen on duty on Beijing's Chang'an Avenue, March 1, 2010. [CFP]

A senior public security official of China on Tuesday urged relevant departments and local authorities to do a good job in ensuring security and maintaining stability as the annual national parliamentary and advisory sessions approach.

All local authorities and relevant departments should make further efforts to ensure the meetings of the National People's Congress (NPC) and the National Committee of the Chinese People's Political Consultative Conference (CPPCC) go on safely and smoothly, Yang Huanning, administrative vice minister of public security, said at a national teleconference.

"The task of ensuring security and maintaining stability during the two sessions remains onerous" despite previous efforts in this regard, said Yang.

"We should keep clear-minded and never lower our guard," Yang warned.

He urged local officials to do more work in dissolving social conflicts and try to root up troubles that may disturb stability.

The vice minister also ordered to minimize the inconvenience that security measures might cause to people's life and work.

Incidents that might disturb social stability and threaten security should be handled properly and strictly according to the law, Yang warned.

Huang Ming, vice minister of public security, demanded at the same meeting emergencies and breaking events be dealt with promptly and properly.

The annual full session of the CPPCC National Committee, the top advisory body, is slated to open Wednesday afternoon, while that of the NPC, the national legislature, is scheduled to open Friday.