Low-temperature　cracking　occurs　on　some　asphalt　pavements　even　though　the　highperformance　grade　(PG)　binders　are　applied　in　asphalt　mixtures.　It　is　neither　realistic　nor　economic　to　solve　the　problems　related　to　low-temperature　cracking　on　asphalt　pavements　by　purely　using　high　PG　binders.　Other　factors　need　to　be　investigated　so　that　this　type　of　distress　can　be　further　restrained.　This　study　focuses　on　investigating　the　effect　of　fine　aggregates　on　the　low-temperature　cracking　on　asphalt　pavements.　Low-temperature　cracking　was　monitored　and　recorded　on　asphalt　pavements　in　a　cold,　northeast　area　of　China.　Cores　were　drilled　on　the　spots　where　low-temperature　cracking　occurred,　and　the　aggregate　gradations　of　the　drilled　cores　were　analyzed　in　the　laboratory.　An　index　called　the　Fine　Aggregate　Content　Deviation　Index　(FACDI)　was　defined　as　the　difference　between　the　actual　fine　aggregate　content　and　the　lower　limit　of　fine　aggregate　content　in　the　designed　aggregate　gradation.　A　positive　relation　was　observed　between　the　FACDI　and　the　cracking　index　of　asphalt　pavements.　It　was　demonstrated　that　the　fine　aggregate　content　was　another　important　factor　that　influences　low-temperature　cracking　of　asphalt　pavement.　The　increase　of　fine　aggregate　content　was　found　to　jeopardize　the　resistance　of　asphalt　mixture　on　low-temperature　cracking.　Based　on　FACDI,　fine　aggregate＇s　contents　in　asphalt　mixtures　of　asphalt　layers　can　be　recommended　to　ensure　an　asphalt　pavement　with　good　low-temperature　performance.　Copyright　©　2016　by　ASTM　International.