The invention aims at providing a large bearing bush integrated with a pressure sensor. The large bearing bush integrated with the pressure sensor comprises an upper bearing bush and a lower bearing bush, wherein an upper rigid rear layer is arranged on the upper bearing bush; an upper tin coating layer is poured on the inner surface of the upper rigid rear layer by a tin coating technology; a lower rigid rear layer is arranged on the lower bearing bush; a sensor probe array is mounted on the inner surface of the lower rigid rear layer; a lower tin coating layer is poured on the inner surfaceof the lower rigid rear layer by the tin coating technology; sensor probes of the sensor probe array are positioned in the lower tin coating layer; alloy layers are centrifugally casted on the upper tin coating layer and the lower tin coating layer; an oil charging hole and an oil channel are formed in the upper bearing bush; a conductor hole is formed in the lower rigid rear layer; outer sensor probe conductors of the sensor probe array are guided out from the lower bearing bush through the conductor hole; and protecting films are adhered to the outer parts of the upper rigid rear layer and the lower rigid rear layer. The large bearing bush integrating the pressure sensor meets the use demands on supporting, lubricating and heavy loading of the bearing bush and is capable of monitoring the pressure level and the pressure distribution modes of an oil film of the bearing bush in running process in real time through a built-in pressure sensor.