Quantum communications have ultra-high security. It is impossible to wiretap, intercept or crack the information transmitted through them, state-run Xinhua news agency reported.
The line is the world's first trunk line of secure quantum telecommunications. The Jing-Hu (Beijing-Shanghai) Trunk Line connects Beijing, Jinan, Hefei and Shanghai.
Officials said that the quantum satellite was expected to provide a fool-proof hack-free communication which makes foreign powers to monitor or intercept China's communication systems.
The satellite is nicknamed 'Micius' after a Chinese philosopher and scientist who conducted optical experiments.
Bai Chunli, president of the Chinese Academy of Sciences (CAS), talked with staff in Hefei, Jinan, Shanghai and Xinjiang Uygur Autonomous Region, through the line.
He also had a video call with Austrian quantum physicist Anton Zeilinger through the satellite.