He expressed concern at the US Department of Commerce announcing on Tuesday it would levy high tariffs on wind towers imported from China.
According to Chen, more than 20 topics were discussed at the meetings on Wednesday.
The US hopes to increase beef exports to China while China wants to boost poultry exports to the US.
"American companies continue to see progress as a result of this high-level engagement," John Frisbie, president of the US-China Business Council, said. The council represents some 240 leading US companies that do business with China.
He Weiwen, co-director at the China-US-EU Study Center of the China Association of International Trade, said China and the US have made progress in protection of intellectual property rights.
"However, it's not easy to remove divergence on some key points. Therefore, seeking common ground is the way to tackle the problem," he said.
Mei Xinyu, a researcher at the International Trade and Economic Cooperation Institute of the Ministry of Commerce, urged Washington to widen access to Chinese investment as "it generates job opportunities".
Beijing-Zhengzhou high-speed railway to start service on Dec. 26