This　paper　studies　the　effect　of　water-cement　ratio　[w/c]　on　the　air-void　parameters　of　cement　concrete,　which　has　a　significant　influence　on　the　durability　of　concrete.　Based　on　the　experimental　investigation,　it　is　found　that　the　impact　on　the　air　content　of　hardened　concrete　due　to　different　water-cement　ratio　is　not　great.　Test　results　also　indicate　that　with　the　increase　of　water-cement　ratio,　the　spacing　factors　also　experienced　a　marked　rise,　and　the　mean　diameters　as　well　as　the　specific　areas　of　air　voids　evidently　increased　or　declined,　respectively,　which　may　lead　to　an　adverse　effect　on　the　frost　resistance　of　concrete.