The present invention provides a wet friction member exhibiting excellent dynamic friction performance and a carbon fiber composite material for manufacturing the wet friction member. A carbon fiber composite material 10 of the present invention contains carbon fibers 11 and a matrix 12 joining the carbon fibers 11 with each other, and the matrix has fine pores having diameters of 3.5 nm to 100 nm. Since the fine pores having diameters of a nanometer (nm) order is formed in the matrix 12 of the carbon fiber composite material 10, the specific surface area of the carbon fiber composite material 10 is increased. As a result, a wet friction member made of the carbon fiber composite material 10 has an improved dynamic friction performance.