The present invention relates to an ozone sterilizer for a chopping board, comprising a chopping board rack and an ozone generation base the ozone generation base comprises a shell and an ozone generation device, the ozone generation device being arranged in the shell, and ozone outlets are provided at an upper end of the shell and the chopping board rack is arranged on the ozone generation base, and the ozone outlets are communicated to the interior of the chopping board rack. In this way, the ozone sterilizer for a chopping board can sterilize a chopping board automatically while playing a role of receiving the chopping board. This ozone sterilizer is sanitary, safe and convenient to use.
