The invention provides a draining pump and a clothes dryer. The draining pump comprises a shell and an exhaust channel, wherein the shell is of a cavity structure with the side wall being provided with an exhaust opening; the exhaust channel is formed in the shell and located at the exhaust opening and is of a semi-closed structure with the side wall being provided with an opening; and the openingand the exhaust opening are different in orientation, and gas inside the shell is discharged out of the shell after passing through the exhaust opening and the exhaust channel. According to the draining pump, the exhaust opening is formed in the side wall of the shell, the exhaust channel is formed outside the shell and located at the exhaust opening, and the gas inside the shell is discharged out of the shell through the exhaust channel after passing through the exhaust opening, so that the problem that gas is trapped inside the shell is effectively solved; furthermore, when the gas is discharged through the exhaust channel, the gas needs to turn, and thus the draining resistance is increased; flow losses of the draining pump are reduced; performance parameters of the draining pump are guaranteed; and when the draining pump works, water cannot be splashed to electric parts above, and use safety of the draining pump is guaranteed.