The invention discloses a continuous granular mixture feeding type sliding friction and abrasion tester, which comprises a granular mixture and solid test piece friction device, a test piece rotating and pushing component, a force measuring component and a granular mixture feeding component, wherein the granular mixture and solid test piece friction device comprises a solid piece and a stirring barrel with a conical surface; the fixed test piece rotating and pushing component comprises a driving motor, a movable coupling, an axial load transmission sleeve and a tapered roller bearing; the movable coupling is only used for transmitting torque to drive the test piece to rotate; the end surface of the test piece is attached to that of the inner ring of the tapered roller bearing; the end surface of the outer ring of the tapered roller bearing is attached to that of the axial load transmission sleeve; the force measuring component comprises a compressed spring, a load type sensor and an axial load transmission sleeve; the granular mixture feeding component comprises a screw push rod and a stirring barrel and is used for pushing granular mixture materials to the side of a friction pair. According to the invention, granular mixtures can be in continuous and stable friction with the solid test piece and the positive pressure in the friction pair can be easily adjusted and conveniently measured.