Anti-terrorism has become a consensus of the international community and there should not exist double standards, said a Chinese official here Wednesday night.

Liu Jianchao, spokesman for the Chinese delegation to the summit of the Shanghai Cooperation Organization (SCO) slated for Thursday, said at a news briefing in the media center of the summit.

"Under the current international situation, a single nation can hardly accomplish the fight against terrorism. The international community should join hands to combat terrorism," Liu said.

One major function of the SCO is to fight the "three evil forces" of terrorism, separatism and extremism, he said. "All security measures for the summit are necessary to ensure a smooth proceeding of the meeting and the safety of all participants."

Asked to comment on the SCO's anti-terrorism achievements, Liu said that over the past five years all SCO member states have made close communication in fighting the "three evil forces" and good cooperation in law enforcement, information exchange and joint military exercises.

SCO member states all believe that the fight against the "three evil forces" is a common task and conforms to all parties' interests, Liu said, stressing that such cooperation has made remarkable results.

Chinese President Hu Jintao Wednesday afternoon talked about joint efforts in fighting the "three evil forces" when meeting with presidents of three SCO member states including Kazakhstan, Tajikistan and Uzbekistan. The four heads of state resolved to join hands to further strengthen anti-terrorism cooperation.

The SCO, established in June 2001, comprises China, Kazakhstan, Kyrgyzstan, Russia, Tajikistan and Uzbekistan.