The work aims to study tribological properties of magnetron sputtering-deposited Ti-Al-Si-N coatings at different ambient temperatures. Ti-Al-Si-N coatings were deposited on the surface of AISI304 stainless steel by magnetron sputtering. Composition and microstructure of the coatings were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffractometer (XRD). Dry sliding friction experiments were carried out at room temperature, 200 ℃, 400 ℃ and 600 ℃ respectively with Al2O3 balls as friction pairs by using HT-1000 tribometer, so as to study tribological properties of Ti-Al-Si-N coatings. The prepared Ti-Al-Si-N coatings had uniform and compact columnar crystals. At RT, 200 ℃, 400 ℃ and 600 ℃, the friction coefficient was 0.6, 0.35, 0.25 and 0.2 respectively while wear volume was 0.319, 0.232, 0.0149 and 0.0136 mm3 respectively. The friction coefficient and wear volume of the coatings decreased as test temperature increased from room temperature to 600 ℃. With the increase of temperature, more oxides, mainly consisting of TiO2 and Al2O3, were produced on the wear cracks. The oxides had certain antifriction effect. Wear mechanism was mainly spalling fatigue at RT, abrasive wear at 200 ℃, oxidation wear and abrasive wear at 400 ℃, and oxidation wear at 600 ℃.