A method of producing a negative electrode sheet includes forming a fluoride coating on surfaces of a plurality of negative electrode active material particles by performing a fluorination treatment on the surfaces of the plurality of negative electrode active material particles; producing a negative electrode composite material containing a plurality of wet granules obtained by mixing and granulating the negative electrode active material particles with the fluoride coating on the surfaces, a binder, and water as a solvent; causing the negative electrode composite material to pass through a gap between two rollers that face each other, compressing the negative electrode composite material into a film, and attaching the film to a surface of a current collector foil; and forming a negative electrode mixture layer on the surface of the current collector foil by drying the film on the surface of the current collector foil.