The invention provides a stable lubricating oil flowing and cooling device in a tilting pad bearing. The device comprises an oil way assembly and a cooling operation part, wherein the oil way assembly comprises a horizontal oil cylinder, two oil baffles and three oil passing plates, oil plugs are respectively installed on both ends of the horizontal oil cylinder, oil inlet pipelines and oil outlet pipelines are arranged on the oil plugs, the oil outlet pipelines on the oil plugs are close to six holes in a side surface, and the other pipelines are the oil inlet pipelines; the cooling operation part comprises an oil pump and a water cooler. According to the device, hot oil which flows from the previous pad is blocked by the two oil baffles, so that the hot oil flows into an oil outlet cavity of the oil cylinder from the six holes in the side surface of the horizontal oil cylinder and enters the oil pump through the oil outlet pipelines, lubricating oil is pressurized by the oil pump and enters the water cooler so as to cool the hot oil, and then the lubricating oil enters an oil inlet cavity of the horizontal oil cylinder through the oil inlet pipelines and then enters the next pad through the three oil passing plates for lubrication. According to the device, the tilting pad lubricating temperature can be reduced, and additionally, the oil supply state of turbulence of the lubricating oil in an oil tank during operation is improved.