Hydrogenated microcrystalline silicon(μc-Si∶H)thin films were deposited by an radio frequency(RF)(13.56 MHz)magnetron sputtering at different substrate temperatures(100-300℃),and the influences of substrate temperature on the growth and properties of μc-Si∶H thin films were investigated.Surface roughness and crystallinity of the thin films increase as substrate temperature in-creases.And all thin films are at the transition region(Xc=49.2%~61.0%).The μc-Si∶H thin films deposited at lower substrate temperature(≤200℃)represent a weak(220)preferred orientation,while the thin films deposited at higher substrate temperature(≥250℃)exhibit a weak(111)preferred orientation.The μc-Si∶H thin films have a dense structure,and the structural compactness of the thin films slightly increases with substrate temperature in-creasing.The Fourier transform infrared spectroscopy(FT-IR)results indicate that the μc-Si∶H thin films have a low hydrogen content(3.9 at%-5.6 at%),which is in favor of reducing light-induced degradation effect.