它的尺寸与脂族化合物或在其中的碳纤维具有多个环氧基团的，在非织造的碳纤维的碳纤维束的某些芳族化合物的数量是构成碳纤维束90个多件的碳纤维的 构成碳纤维束（1）的碳纤维的根数的数均x是90〜1000根/束，构成碳纤维束（1）Σ-50〜500个碳纤维的根数的标准偏差的范围内 碳纤维无纺布中的范围内。 可以兼具高流动性和机械性能，当碳纤维复合材料结构紧凑，在机械性能变化较少，能够提供具有优异的碳纤维毡的成形性的碳纤维的非织造织物。

It is sized with an aliphatic compound or a specific aromatic compounds of carbon fibers having a plurality of epoxy groups, of the carbon fiber bundle of the carbon fibers in the nonwoven, the number is not less than 90 pieces of the carbon fibers constituting the carbon fiber bundle number-average x of the number of the carbon fibers constituting the carbon fiber bundle (1) is in the range of 90-1000 present / bundle, the standard deviation of the number of the carbon fibers constituting the carbon fiber bundle (1) sigma is 50 to 500 carbon fiber nonwoven fabric is in the range of. Can both high fluidity and mechanical properties at the time of the carbon fiber composite material compact, less variation in mechanical properties, can provide a carbon fiber nonwoven fabric excellent in formability of the carbon fiber mat.