PROBLEM TO BE SOLVED: To provide a grease composition which is excellent in the low friction coefficient and abrasion resistant property, and is environmentally friendly. SOLUTION: The grease composition is produced by adding of (A) 0.1-5 wt.% of wolfram disulfide and (B) 0.1-5 wt.% of zinc dithiophosphate and/or molybdenum dialkyldithiocarbamate to a grease containing 1-25 wt.% of a urea compound, or optionally further adding (C) 0.1-5 wt.% of molybdenum dithiophosphate. A grease composition being excellent in low friction coefficient and abrasion-resistant property, and also enviromentally friendly can be produced without using or using a relatively small amount of a molybdenum compound, which is subject to PRTR. COPYRIGHT: (C)2007,JPO&INPIT