The invention provides a technology and system for synergistically processing zinc-containing waste paint slag and vinasse and recovering zinc. The technology comprises the following steps: distributing zinc-containing waste paint slag and vinasse into a rotating bed pyrolysis device and carrying out pyrolysis, so that zinc-containing mixed oil gas is obtained; introducing the zinc-containing mixed oil gas into a direct-fired boiler to be burned, so that first zinc-containing flue gas is obtained; and cooling the first zinc-containing flue gas and then recycling by virtue of a dust removal device, so that high-purity zinc oxide and second flue gas are obtained. The technology for synergistically processing the zinc-containing waste paint slag and vinasse and recovering zinc has the advantages that the problem that resourceful treatment is difficult to carry out on a large amount of vinasse is effectively solved, a new way is found for treatment of hazardous waste such as the zinc-containing waste paint slag, a vinasse and paint slag synergistic hydrolysis way is adopted in a hydrolysis reaction process, not only is the problem that the vinasse and paint slag are difficult to treat solved, but also the defects that calorific value of pyrolysis gas is low when the vinasse is hydrolyzed alone and pyrolysis time is long when the paint slag is hydrolyzed alone are solved, and recovery of metal zinc is also realized, so that economy of the whole system is obvious.