The utility model relates to the technical field of crude oil electric dehydration tanks of oil fields and discloses a liquid distributing, sand guiding and sand discharging device of an inlet of a crude oil electric dehydration tank. The liquid distributing, sand guiding and sand discharging device disclosed by the utility model comprises an oil inlet pipe, a liquid distributing device which can be fixedly mounted at the lower part of an inner cavity of an electric dehydration tank, a sand guiding device, and a sand cleaning and water spraying device, wherein an inner port of the oil inlet pipe is connected with the inner cavity of the liquid distributing device; oil distributing holes are formed at the upper part of the liquid distributing device; a sand outlet is formed on the liquid distributing device; and the sand guiding device is fixed on the liquid distributing device and has the capability of conveying the sand discharged by the sand outlet to a sand discharging opening at the bottom of the electric dehydration tank. The liquid distributing, sand guiding and sand discharging device disclosed by the utility model is reasonable and compact in structure, is convenient to use, achieves the purpose of facilitating the discharging of sand from the electric dehydration tank via the matched use of a liquid distributing groove shaped as Pi and a sand guiding groove, has the characteristics of small sand settling area and easiness in discharging, improves the working efficiency and saves the production cost.