The invention belongs to the technical field of wet metallurgy, particularly relates to a method for comprehensively recovering useful resources from a copper raffinate, and especially relates to a method for recovering copper, cobalt and sulfuric acid in the low-cobalt copper raffinate by adopting a nanofiltration membrane concentration separation-neutralization and sedimentation technology. Concretely, the nanofiltration membrane concentration separation technology is adopted for preventing copper, cobalt, iron, calcium, aluminum, arsenic and magnesium in the copper raffinate from entering a concentrated solution, the concentrated solution is treated by chemical precipitation so as to recover valuable metal cobalt and copper, and meanwhile, iron, aluminum, arsenic, calcium and magnesium impurities in the raffinate are open-circuit removed; and a dialysate (a sulfuric acid solution) returns to a leaching system of a copper hydrometallurgy process, so that the aims of recycling the useful resources in the raffinate, purifying and removing impurities are achieved, and meanwhile, the quality requirements of leaching and electrodeposition processes on the solution during copper hydrometallurgy production are met.