Abstract: A pool cleaner is provided. The pool cleaner includes a housing, a water pump, a power supply, and a switch for controlling start/stop of the water pump, where the power supply is electrically connected to the water pump; a lower portion of the housing is provided with a suction port; the housing is provided with a discharge port and a water inlet; the suction port and the discharge port are connected via a tube; the water inlet communicates with a water discharge passage; the water discharge passage communicates with the tube; and the water pump is configured to drive liquid flow from the water inlet to the water discharge passage. The pool cleaner has the following advantages. No additional components such as impeller are disposed inside the entire tube, allowing large particles to pass smoothly.