China calls President Donald Trump's election interference accusations "entirely fabricated" after he accused Beijing of running influence campaign.

China has rejected Donald Trump's allegation of interfering in US elections and stealing voter data. The spat threatens to cast a shadow over Xi Jinping's proposed September visit and wider bilateral ties.

"The relevant claims made by the US side are pure fabrications and malicious smears that have long since been proven to be groundless statements," Chinese foreign ministry spokesperson Lin Jian said.

China says it has never interfered in U.S. elections and has no interest in doing so.