The utility model discloses a bearing device for a polish rod. The bearing device comprises an upper support base, an upper pipe, a lower pipe, a steel wire rope and a base, wherein the upper pipe is connected with the lower pipe in thread mode, the upper support base is fixed on the upper end of the upper pipe, and the lower support base placed on the base is fixed on the lower end of the lower pipe. The base is hung on the steel wire rope, and the upper support base, the upper pipe, the lower pipe and the base are provided with holes used to enable a polish rod to pass. The bearing device enables a stress point of hanging the polish rod to move up to a coupling place from an original square clip place and the polish rod does not rupture at the square clip place. In addition, the problem that the square clip can not lock, the polish rod falls off, a pipe-rod pump is struck and well-laying appears can not happen. The bearing device is good in bearing stability for the polish rod, and improves efficiency of oil extraction and applies to various rod pumped wells.