"We will provide financial support to producers in the short term," said Christian Schmidt during a press conference in Berlin.
The federal government will make available "100 million euros plus X" in direct aid and tax benefits, Schmidt said, adding that he was planning to discuss with Brussels "how much the sum X could be".
Thousands of farmers are seeing their margins squeezed by slumping prices as supply outstrips demand all across the world.
But the export market proved to have a far smaller appetite than promised, as slowing economic growth in large emerging countries cut demand.
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Russia, a big consumer of German cheese, was also boycotting European produce in the row over Ukraine's war.
As a result, prices have fallen sharply.
Led by discount chains, many German distributors have cut the retail price of milk to 0.46 euros (USD 0.52) per litre, leaving producers with a revenue of less than 20 cents a litre -- which they argue is simply not profitable.
The production structure is very varied, ranging from smallhold farms in the south to large-scale ones with several hundreds of cows each in the north.