Chinese Foreign Ministry spokeswoman Hua Chunying said in a statement on Monday that the US measure "seriously violates the norms of international relations and harms China's interests."
"China urges the United States to immediately correct its mistaken policy and revoke these irrational sanctions toward the relevant companies and individuals and cease taking actions that harm China's interests and China-US relations," the statement further read.
The United States on Monday imposed sanctions on a Chinese businessman and a number of firms over the allegation that they have sold Iran items banned under the US Arms Control Act and its Export Administration Act.
According to a notice published on the US Federal Register website, the sanctions took effect on February 5.
The United States, Israel and some of their allies have repeatedly accused Iran of pursuing non-civilian objectives in its nuclear energy program.
Over the false allegation, Washington and the European Union have imposed several rounds of illegal unilateral sanctions against the Islamic Republic.
Iran refutes the allegation and argues that as a signatory to the nuclear Non-Proliferation Treaty (NPT) and a member of the International Atomic Energy Agency (IAEA), it is entitled to develop and acquire nuclear technology for peaceful purposes.
The latest US sanctions, announced on February 5, target Iranian oil revenues.
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