Problem to be solved. To provide a bubble generator which can improve washing efficiency of food with a simple structure. Solution. A bubble generator is externally mounted on a washing tub. The bubble generator (1) includes: a housing (10); a suction/discharge flow passage (15) which has a suction port (11) of washing water on one end and has a discharge port (13) of the washing water on the other end; a pump (16) which takes the washing water taken from the suction port in the housing; a fine bubble generation part (20) which generates fine bubbles in the washing water; and a jet bubble generation part (30) which generates bubbles larger than the fine bubbles generated by the fine bubble generation part in the washing water passing through the fine bubble generation part.

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