A method of manufacturing a sliding component comprising a main body made of a non-carburized heat-hardened steel and a member adapted to form at least one sliding face of sliding faces of the sliding component and heat-joined to the main body, in which the steel-made main body is heat-hardened before heat-joining to the member and the heat-joining between the main body made of the heat-hardened steel and the member is conducted at a lower temperature than the temperature at which the heat-hardened main body has been heat-hardened. The sliding component is superior in hardness and abrasion resistance and is readily manufactured at a reduced cost.