A combination multi-level rack includes two side racks, at least an object holding member, and a fastener. Two sides of each of the side racks are provided with a longitudinal part, respectively, and a transverse part combined with the longitudinal parts. Four corners of the holding member are provided with a combining member, respectively. Each of the combining members has an engaging groove and a combining part disposed on a lateral side of the engaging groove, and the engaging groove engages the transverse part. The fastener removably engages the combining part with the longitudinal part. Therefore, the object holding member is stably combined to the two side racks.