The invention discloses an intelligent lubricating long-service-life knuckle bearing spherical hinge. The spherical hinge comprises two angular contact knuckle bearings with self-lubricating materials, a pin shaft, a bottom plate, a base, a protection device and a lubricating oil intelligent circulation system, wherein the lubricating oil intelligent circulation system comprises an oil pump, an oil filter and a power supply; a liquid inlet end of the oil pump communicates with the upper part of the base, and a liquid outlet end of the oil pump is connected with the lower part of the base through the oil filter. According to the intelligent lubricating long-service-life knuckle bearing spherical hinge, the two angular contact knuckle bearings forming the spherical hinge are installed in thebase, a lubricating oil electric intelligent circulation system is used for carrying out intelligent circulation and filtration on th lubricating oil in the base, so that the service life of the knuckle bearing spherical hinge is prolonged.