The invention discloses an experiment device for studying sliding support friction behaviors. The experiment device comprises a servo hydraulic driving system, wherein the servo hydraulic driving system is mounted on a base platform; the servo hydraulic driving system is arranged at the tail part of the device; the front end of the servo hydraulic driving system is connected with a tensile force detection component; the tensile force detection component is connected with a sliding support component through a connecting flange; the sliding support component comprises a sliding support flange part; a heating and temperature control device is mounted on the sliding support flange part; the sliding support flange part is connected with a displacement measuring component through a sliding support pre-tightening bolt mounted on the upper end surface of the sliding support flange part; a limiting feedback component is mounted on one side of the sliding support flange part; and a bolt pre-tightening force measuring device for measuring the pre-tightening force of a sliding support pre-tightening bolt on the sliding support flange part is arranged on the base platform. The experiment deviceis compact in structure, high in measurement precision and easy to operate, and friction behaviors of sliding supports can be researched at a normal temperature or after the temperature is increasedto 250 DEG C through a heating device.