The invention discloses a surface treatment process for an anti-seizure side plate. The surface treatment process comprises the following steps: a, performing one steam treatment on a side plate blank; b, removing burrs; c, performing secondary steam treatment, and thus forming Fe3O4 by using water in the air and iron, wherein the steam temperature is controlled at 550-570 DEG C, and generated Fe3O4 molecular crystals compactly adhere to an iron substrate to form a Fe3O4 protection film. According to the surface treatment process for the anti-seizure side plate, a hard layer of 0.1-0.2 millimeter is formed on the surface of a powder metallurgy side plate through secondary steam treatment, so that the original hardness HRB100 is increased to HV300, and the side plate is smooth and free from deformation in the surface, black in the metallic luster, low in the friction coefficient and resistant to wear, and has good anti-seizure capability and higher rust resistance.