The invention belongs to the field of nonferrous metallurgy, and particularly relates to a device and technology for smelting and processing secondary lead materials to generate lead bullion by adopting a bottom blowing furnace hearth. Bullion lead materials are matched with pulverized coal, then limestone, pebbles, iron ore and other solvents are added to the mixture according to slag types and pelletizing is carried out, the lead bullion and reducing slag are output through the processing of a bottom blowing smelting furnace, the lead bullion is sent to a refining system, the content of valuable metal in the reducing slag is low, and the reducing slag is deposited as waste slag. Meanwhile, waste heat recovery is carried out on the output high concentration SO2 smoke and dust collection is carried out on the output high concentration SO2 smoke through a dust collection system, then the high concentration SO2 is sent to a sulfuric acid preparing system or a sodium sulfite preparing system to produce sulfuric acid or sodium sulfite products, and smoke dust is returned to carry out dosing. According to the device and technology for smelting and processing the secondary lead materials to generate the lead bullion by adopting the bottom blowing furnace hearth, lead plaster of secondary lead can be processed economically and effectively, and the process device is strong in leakproofness, good in environmental protection effect, high in efficiency of heat utilization, convenient to operate, high in automation level, low in labor intensity, long in service life of the furnace and high in metal direct recover rate, and effectively solves the problems that energy consumption is high, efficiency of heat utilization is low, and environmental protection effects are poor in the smelting and recovering process of lead-bearing materials.