A dishwasher that includes: a tub; a main arm configured to rotate about a first axis and spray water; an auxiliary arm configured to rotate about a second axis and spray water in the interior space; a stationary gear unit configured to rotate based on rotation of the main arm to generate rotational force and including a plurality of gear teeth; an eccentric rotation unit engaged with one or more teeth of the plurality of gear teeth, and configured to, (i) based on rotation of the main arm, rotate to transfer rotational force of the stationary gear unit to the auxiliary arm and, (ii) based on resistance force from the auxiliary arm, control transfer of rotational force of the stationary gear unit to the auxiliary arm; and a link member configured to rotate the auxiliary arm based on rotational force of the stationary gear unit is disclosed.