A negative electrode active material of a non-aqueous secondary battery of the present invention includes a first active material, a second active material, and a third active material. The first active material is a carbon material having a D/G ratio of 0.15 or less, where G represents the peak intensity observed in a Raman spectrum from 1578 to 1592 cm−1 and D represents the peak intensity observed in a Raman spectrum from 1349 to 1353 cm−1 of Raman spectroscopy. The D50 of the second active material is 10 μm or less. The second active material includes at least one of a first carbon material having the D/G ratio of 0.2 to 2.0 and a second carbon material having the D/G ratio of 1.0 to 2.0. The D50 of the third active material is 5 μm or less. The third active material contains silicon and oxygen as constituent elements.