The invention relates to a heat utilization plate, in particular to a double-layer heat utilization plate. Two working medium plates are placed in parallel up and down at a certain distance, so temperature difference is formed between the two adjacent working medium plates, and air convection is formed in a convection channel, so as to supply an additional energy source to the working media in the working medium plates. Through unique flow channel design of the working medium plates, the energy efficiency of the working medium plates is improved, and the voltage endurance capability of the working medium plates is enhanced. Only the space of one original heat collecting plate is occupied by the heat utilization plate, but the supplied heat is more than that supplied when two heat collecting plates are independently operated; the space is saved, additionally, the energy efficiency of the heat utilization plate is greatly improved, and the problem of limited used space of a heteropolymer heat utilization system in a high-rise housing is solved.