The invention discloses a bearing cooling device. The bearing cooling device comprises a cooling chamber and a cooling body. A hot oil inlet and a cold oil outlet are formed in the cooling chamber, the cooling body is located in the cooling chamber, the cooling body and the cooling chamber are coaxial, and the cooling body comprises a cooling pipe, a water inlet flange, a water outlet flange, a bottom hole runner partition plate and a top hole runner partition plate; the water inlet end of the cooling pie is connected to a water inlet flange, the water outlet end of the cooling pipe is connected to a water outlet flange, perforated holes for inserting the cooling pipe are distributed in the surfaces of the bottom hole runner partition plate and the top hole runner partition plate, and the bottom hole runner partition plate and the top hole runner partition plate are distributed in the cooling chamber between the hot oil inlet and the cold holt outlet in a spaced manner. The bearing cooling device disclosed by the invention has relatively high heat exchange efficiency. Compared with an existing cooler, the oil temperature can be reduced by about 8-20 DEG C, alarming and stopping due to excessive high oil temperature can be effectively prevented, and a bush wearing or bush burning phenomenon due to excessively high temperatures of the bearing bush and the cooling oil can be effectively avoided.