The invention provides a non-aqueous electrolyte secondary battery negative electrode material that can be produced without performing a heat treatment at 2000 degrees centigrade or higher and that further improves discharge capacity. The non-aqueous electrolyte secondary battery negative electrode material has core parts and shell parts. The core parts include carbonaceous negative electrode active material particles. The shell parts include: a polyimide; and silicon negative electrode active material particles and/or tin negative electrode active material particles. The non-aqueous electrolyte secondary battery negative electrode material is characterized in that the ratio of the volume average particle size (D50) of the silicon negative electrode active material particles and/or the tinnegative electrode active material particles to the volume average particle size (D50) of the carbonaceous negative electrode active material particles is 0.001-0.1. The non-aqueous electrolyte secondary battery negative electrode material is also characterized by containing 2-20 mass% of the silicon negative electrode active material particles and/or the tin negative electrode active material particles relative to 100 mass% of the carbonaceous negative electrode active material particles.