The logistics performance index (LPI) for January stood at 51.5 percent, down 0.9 percentage points from December 2013, the CFLP said in a statement on Friday.
A reading above 50 percent indicates expansion from the previous month, while a reading below indicates contraction.
He Hui, deputy director of the China Logistics Information Center, attributed the decline to the influence of the Spring Festival, but also stressed the sector was stable, as the index is above the threshold of 50 percent.