The invention discloses a fulcrum-variable intelligent radial tilting pad sliding bearing device, which comprises a state-adjustable radial tilting pad sliding bearing, a detection circuit, a control system and an execution unit, wherein the state-adjustable radial tilting pad sliding bearing consists of fulcrum-variable radial tilting pad blocks, support units and a bearing casing; in the detection circuit, high-precision vibration sensors are mounted near the radial tilting pad sliding bearing, and the output ends of the vibration sensors are connected with a control computer; the control system comprises the control computer, a piezoelectric ceramic driving power supply, a memory alloy control unit and a switch selective circuit unit; and the execution unit consists of a support ejector head, mechanically packaged piezoelectric ceramic, cushion blocks, an alveolate packaged memory alloy and hollow screw rods. According to the device, the position of a tilting pad block back support point and radial positions of the tilting pad blocks are adjusted by the control computer, the real-time adjustment can be conducted on the working state of the radial tilting pad sliding bearing, and requirements of various working conditions are met.