▎ 摘　　要

NOVELTY - A semiconductor refrigeration sheet for heat preservation cosmetic box, comprising a cold end substrate and a hot end substrate, a heat insulation plate and a plurality of P-N galvanic couple pairs connected with each other are set between the cold end substrate and the hot end substrate, P-N galvanic couple pair comprises a P-type semiconductor and an N-type semiconductor; P-type semiconductor and N-type semiconductor are sleeved in the insulating plate; each P-type semiconductor and N-type semiconductor are provided with a graphene layer. The utility model greatly improves the efficiency of refrigerating and heating by the graphene layer in the P-N galvanic couple pair; it can quickly reach the effect of refrigerating and heating; it meets the use requirement of the cosmetic insulation can; it does not need the semiconductor refrigeration sheet in the insulation box for a long time in the working state, so as to increase the service life of the cosmetic box.