Chinese Foreign Ministry spokesman Geng Shuang said on Monday that China is "maintaining close communications with other parties" about the planned meeting, AP reported.
He added that "China has repeatedly stressed that ensuring the full implementation" of the Iran nuclear deal is "the only viable and effective way" to resolve the issue and ease tensions.
Since the US unilaterally pulled out of the deal last year, the other parties to the agreement — China, Germany, France, Britain, Russia and the European Union — have been trying to preserve it.
The US has imposed sanctions on Chinese and other entities for allegedly helping Iran buy materials for its nuclear program.
China on Friday urged Washington on Friday to "correct" sanctions imposed on Chinese companies.
"China has consistently and resolutely opposed the United States imposing unilateral sanctions and so-called long-armed jurisdiction over other countries, including China," said Geng. "We urge the United States to immediately correct this wrong approach and earnestly respect the legitimate rights and interests of all parties."
Geng said Beijing opposes nuclear proliferation but rejects Washington's unilateral sanctions.
"We resolutely oppose any form of proliferation activities, always strictly implement relevant international obligations and stay committed to international cooperation on non-proliferation," Geng said.