A tableware washing device , comprising: an inner liner , configured to define a washing cavity for accommodating a tableware to be washed; a water collection cup , provided at a bottom of the inner liner , and configured to define a water collection cavity , wherein the water collection cavity is configured to collect washing water that flows from the washing cavity , the water collection cavity is communicated to the washing cavity via a first water supply pipeline , at least one of the water collection cup and the first water supply pipeline is provided with a washing pump , the washing pump is configured to pump the washing water in the water collection cavity to the washing cavity through the first water supply pipeline ; and a heating apparatus , configured to selectively heat the washing water; characterised in that the heating apparatus comprises a semiconductor cooler , the semiconductor cooler is configured to perform a primary heating on the washing water, wherein the semiconductor cooler comprises a refrigeration end and a heating end , the heating end is configured to heat the washing water, the tableware washing device further comprises a heat-exchange pipeline , an auxiliary heat exchanger and a heat-exchange pump , the heat-exchange pipeline is configured to be connected to the refrigeration end , each of the auxiliary heat exchanger and the heat-exchange pump is provided on the heat-exchange pipeline , the heat-exchange pipeline is configured to form a circulation loop, heat-exchange liquid is configured to be pumped by the heat-exchange pump to circulate in the circulation loop, and to perform heat exchange with the refrigeration end . an inner liner , configured to define a washing cavity for accommodating a tableware to be washed; a water collection cup , provided at a bottom of the inner liner , and configured to define a water collection cavity , wherein the water collection cavity is configured to collect washing water that flows from the washing cavity , the water collection cavity is communicated to the washing cavity via a first water supply pipeline , at least one of the water collection cup and the first water supply pipeline is provided with a washing pump , the washing pump is configured to pump the washing water in the water collection cavity to the washing cavity through the first water supply pipeline ; and a heating apparatus , configured to selectively heat the washing water; characterised in that the heating apparatus comprises a semiconductor cooler , the semiconductor cooler is configured to perform a primary heating on the washing water, wherein the semiconductor cooler comprises a refrigeration end and a heating end , the heating end is configured to heat the washing water, the tableware washing device further comprises a heat-exchange pipeline , an auxiliary heat exchanger and a heat-exchange pump , the heat-exchange pipeline is configured to be connected to the refrigeration end , each of the auxiliary heat exchanger and the heat-exchange pump is provided on the heat-exchange pipeline , the heat-exchange pipeline is configured to form a circulation loop, heat-exchange liquid is configured to be pumped by the heat-exchange pump to circulate in the circulation loop, and to perform heat exchange with the refrigeration end . <EOS>