A process for producing Chevrel compounds, which comprises baking a mixture of metal sulfide, a metal molybdenum and molybdenum sulfide under reduced pressure or in an inert gas stream containing a reducing gas, or baking a mixture of metal sulfide and molybdenum sulfide in an inert gas stream containing a reducing gas. This process enables synthesis of Chevrel compounds inexpensively on a large scale repeatedly using the same reaction vessel without complicated steps as is different from conventional processes.