Sr-Ca-Cu-O complex oxide thin films were prepared at different firing temperatures using a spin coating method. Sr_0.14Ca_0.86CuO₂ having layer structure could be prepared at lower temperatures and the method was compared with ordinary firing methods. However, the single phase of Sr_0.14Ca_0.86CuO₂ was not obtained under such spin coating conditions as in this study. The friction properties of four spin coating films sliding against a cemented carbide ball were investigated using a Bowden-Leben type friction tester. Comparatively low friction coefficient and high wear resistance under non-lubrication conditions were obtained with these complex oxide films.