The invention discloses a technology for recycling and refining furnace clinker of a lead and zinc metallurgical furnace. The technology comprises the following steps: smashing furnace clinker of the lead and zinc metallurgical furnace into powder with the particle size smaller than 1mm, and putting the powder in a magnetic separator for separation; obtaining iron powder for standby application, wherein the selected magnetic field intensity of the magnetic separator is required to greater than 480 kA/m; putting the iron powder in a container capable of being heated and pressurized, adding sulfuric acid solution, and under the heating and pressurizing conditions, turning over the container to enable the iron powder and sulfuric acid solution to be fully mixed and react; directly extracting and recycling gold and silver in the reactant, adopting the replacement or sulfide sedimentation manner to recycle metal substances such as silver, copper, lead, arsenic and the like from the left residue; after purifying and refining the residue for the second time, spraying and heating for reaction to generate iron oxide red, and recycling the iron oxide red. Compared with the prior art, the manners of magnetic separation, acidolysis, replacement and oxidation recycling are mainly adopted for decomposition and extraction and multiple recyclable substances can be extracted. The technology is energy-saving and environment-friendly and has popularization and application value.