The invention relates to a method for producing a copper-based bacteriostatic alloy material through treating hot copper slag by using a bottom blowing furnace, which comprises the following steps: 1)transporting hot copper smelting slag to a novel depletion furnace by using slag bags, and adding the slag into the depletion furnace from a charging port at the end of the furnace body; 2) adding avulcanizing agent into ingredients, melting and settling; 3) adding a combined flux in the melting process so as to maintain the viscosity and temperature of the slag in a reasonable interval; 4) spraying gas into the furnace body by a bottom spray gun of the novel depletion furnace, automatically cutting the gas according to the process, heating fuel in a melt, completing a redox reaction, separating slag and matte, wherein copper matte enters a salamander furnace for smelting; 5) optimizing the spray gun to inject the copper slag by using natural gas for deep depletion, recovering valuable metal elements from the copper slag to form the copper-based bacteriostatic alloy material, wherein tailings can be used for preparing water permeable bricks and other building materials; the method has the advantages that recovery rate of valuable elements in copper melting slag is improved; efficient utilization of resources is achieved; interfacial mass transfer and interfacial chemical reaction are facilitated, and the problem of environmental protection is solved.