A small-footprint nanobeam photonic crystal laser made of InGaAsP material is directly integrated on a SiO2/Si substrate via transfer-printing process. The transferred nanobeam structure with a physical volume of ~6.6×0.58×0.28 μm3 (~10.5 (λ/n)3) shows single mode lasing near 1550 nm with continuous-wave (CW) operation at room-temperature.