The invention provides a drip deflector for a stuffing box of a main drainage pump for mining. A water pump shaft passes through the stuffing box, a stuffing gland and a bearing bracket; a drip hole is formed at the lower part of the bearing bracket; a steel-pipe threaded head is mounted on the drip hole; and the steel-pipe threaded head is connected to a hose. The drip deflector provided by the invention is used for efficiently preventing a pump body, bolts and a pipeline of the main drainage pump from being rusted, improving the maintaining efficiency, reducing the accident rate, and saving labor and time.