A cleaning solvent composition that is made by either blending aliphatic fluorohydrocarbon as expressed by the general formula C.sub.n F.sub.m H.sub.2n+2-m (wherein, n and m are a positive integral numbers, being 4.ltoreq.n.ltoreq.6, 2n-3.ltoreq.m<2n+2 respectively) or blending a mixture of this aliphatic fluorohydrocarbon and alcohol having a carbon number of 1 to 4 with lactam and/or carboxylic