Water pressure driven directional deflecting device

A water pressure driven directional deflecting device comprises an inner pipe assembly and an outer pipe assembly. The inner pipe assembly comprises an inner through pipe, a needle bearing, an inner short connecting pipe and a plane bearing. The outer pipe assembly comprises an outer through pipe, an outer short connecting pipe, a directional slip, a deflecting slip, an elastic element A and an elastic element B. When the inner through pipe is sleeved by the outer through pipe provided with the directional slip and the deflecting slip, an annular space A and an annular space B are formed between the outer through pipe and the inner through pipe, one side of the annular space B communicates with a flow guide hole in the inner through pipe, and the other side of the annular space B is connected with a flow drainage channel in the outer through pipe. The device is applied to directional coring drilling, when the device works, high-pressure water flow is used as a medium to drive the directional slip and the defl