The green parts of cordierite/carbon-fiber composites are fabricated by the selective laser sintering technique and then the final porous ceramic parts are obtained by high-temperature sintering. The changes of porosity, mechanical performance and dimensional accuracy under different processes are investigated. The results show that the carbon fibers are bonded into the matrix by bonding necks and with the increase of sintering temperature, the cordierite melts and deforms, which leads to the reduction of porosity. When the sintering temperature is 1350-1400 ℃, the μ-cordierite is stable. In contrast, when the sintering temperature increases to 1425 ℃, the μ-cordierite is transformed into the α-cordierite. Moreover, the carbon fibers effectively enhance the toughness and strength of the green parts and with the increase of sintering temperature, the compressive strength of ceramic parts increases until to its maximum value of 5.48 MPa at 1425 ℃.