The Shanghai Cooperation Organisation (SCO) groups China, Russia and the former Soviet republics of Tajikistan, Uzbekistan, Kazakhstan and Kyrgyzstan, while India, Pakistan, Iran, Afghanistan and Mongolia are observers.
"As the influence of the SCO's development has expanded, more and more countries in the region have brought up joining the SCO," Chinese Vice Foreign Minister Cheng Guoping told a news briefing.
Read: Nawaz, Modi may meet at Russia summit
"...India and Pakistan's admission to the SCO will play an important role in the SCO's development and it will play a constructive role in pushing for the improvement of their bilateral relations."
The SCO was originally formed to fight threats posed by radical Islam and drug trafficking from neighbouring Afghanistan.
Cheng said that the summit, to be attended by Chinese President Xi Jinping, would also discuss security in Afghanistan.
Beijing says separatist groups in the far western region of Xinjiang, home to the Muslim Uighur minority, are seeking to form their own state called East Turkestan and have links with militants in Central Asia as well as Pakistan and Afghanistan.
Read: Deepening partnership: Pakistan looks to Russia for satiating energy demand
China says that Uighur militants, operating at the East Turkestan Islamic Movement (ETIM), has also been working with Islamic State.
"It can be said that ETIM certainly has links with the Islamic State, and has participated in relevant terrorist activities. China is paying close attention to this, and will have security cooperation with relevant countries," Cheng said.
COMMENTS (10)
Comments are moderated and generally will be posted if they are on-topic and not abusive.
For more information, please see our Comments FAQ