November exports from the world's second largest economy fell 1.1% from a year earlier, the fourth straight fall.
Exports to the US were down 23%, the worst such result since February and the twelfth monthly decline in a row.
Another round of US tariffs on Chinese goods is due next Sunday, as part of the ongoing trade dispute.
On Friday, White House economic adviser Larry Kudlow said the 15 December deadline - to impose a new round of tariffs on some $156bn of Chinese exports - remained in place.