Abstract: The grade of copper and iron in copper smelting slag are high, and they are often associated with valuable metal elements such as gold, silver, lead and zinc. Therefore, improving the comprehensive utilization of copper slag is conducive to improving the utilization rate of resources and reducing environmental pollution. The present situation of comprehensive recovery and utilization of copper slag in China was introduced in this paper. The composition and cooling mode of copper slag was analyzed. The technology of copper recovery from copper slag by fire dilution, wet leaching and flotation, as well as iron recovery by magnetic separation and leaching was reviewed. The advantages and disadvantages of various methods were analyzed. The recovery of other valuable metals in copper slag and its application in building materials and functional materials were summarized. The prospect of the comprehensive recycling and utilization of copper slag was discussed.