A sliding part comprises a first sliding member made of a steel, a second sliding member made of a steel, a first carbide film comprising a carbide and formed on the surface of the first sliding member, and a second carbide film comprising a carbide and formed on the surface of the second sliding member. The first sliding member and the second sliding member slide relative to each other while applying loads on each other. The carbide of the first carbide film and the carbide of the second carbide film differ from each other, and the hardness ratio of the first carbide film and the second carbide film is not more than 1.4.