A dishwasher that includes: a tub configured to accommodate an object; a main arm that is configured to (i) rotate about a first axis inside the tub, (ii) guide first water of the incoming water through a first flow path and second water of the incoming water through a second flow path, and (iii) spray the first water to the object; an auxiliary arm that is configured to (i) rotate about a second axis inside the tub and (ii) spray the second water to the object; and an auxiliary arm connector that couples the main arm to the auxiliary arm and that is rotatable with the auxiliary arm, the auxiliary arm connector including: an auxiliary flow path guide that is configured to (i) guide the second water from the main arm to the auxiliary arm and (ii) control water pressure of the second water is disclosed.