The China Earthquake Networks Center said the epicenter of the shaking was located near the city of Dengta in Liaoyang county and Shenyang, the capital of Liaoning Province, the official Chinese news agency Xinhua reported.
It struck at 12:18 p.m. local time.
Dengta's mayor said the city government had not received any reports of casualties or homes collapsing through cracks were spotted in some houses and toppled chimneys were seen around town.
In Shenyang, residents said the quake lasted about 20 seconds.
Mobile communication in areas around the epicenter of the quake was not affected, the earthquake center said.