Provided is a washing machine having an improved structure for efficiently controlling a distribution of washing water to improve washing performance. The washing machine includes a tub, a rotary tub rotatably provided inside of the tub, a tub cover coupled to the tub to prevent washing water from overflowing the tub, and a plurality of guide units formed on a bottom surface of the tub cover to guide the washing water into the inside of the rotary tub. The plurality of guide units includes a first guide having an outer end spaced from an edge of the tub cover in an inward direction of the tub cover, a second guide having an outer end spaced from the edge of the tub cover in the inward direction of the tub cover, and disposed to be spaced apart from the first guide in a circumferential direction of the tub cover, and a third guide connecting the outer end of the first guide and the outer end of the second guide.