To provide a method for manufacturing of a fluororesin compound that can achieve improvements in the working efficiency and energy efficiency by eliminating the cooling process before the impregnation work of a crosslink-forming agent and the heating at the time of that work.

In the method for manufacturing of the fluororesin compound, which manufactures a crosslinkable fluororesin by kneading a raw material 1 comprising a fluororesin, then granulating into pellets and impregnating/mixing a crosslink-forming agent into the pellets, the pellets are weighed while being supplied into stirring impregnation apparatuses 10A, 10B equipped with weighers and the pellets after the weighing are added with the crosslink-forming agent 6 to be impregnated.