Yu Hongyang told Anadolu Agency that Beijing would be willing to discuss Turkey joining the six-nation bloc with other member states.
Speaking ahead of President Recep Tayyip Erdo?an's visit to China, Yu said: "Turkey has reached the position of being a dialogue partner of the organization by attending the activities of the SCO in recent years.
"China, which understands Turkey's intention of becoming a member of the SCO, is ready for Turkey's membership… in consultation with other member countries."
The SCO is made up of Russia, China, Kazakhstan, Kyrgyzstan, Tajikistan and Uzbekistan. Turkey was approved as one of six "dialogue partners" in 2012.