In this paper, spectra of odd-parity states of Sm atom are systematically studied with two-photon ionization detection method. The Sm atom is excited by a pulsed dye laser and scanned from 585 nm to 663 nm, so that it is populated in different odd-parity states with 4f66s6p and 4f55d6s2 electronic configurations from one of the 4f66s27FJ(J=0—6) states. Then the Sm atom is further excited and ionized by a two-photon transition with a second laser which has a much higher intensity and a fixed wavelength. The Sm ions emerging from the above processes were detected by an MCP detector. Some of the transitions are reported for the first time together with their resonance wavelengths and relative strengths, while the rest of them which have been reported previously in the litcrature are confirmed by the present work with supplementary information on their relative strengths.