The invention is suitable for the technical field of resource recovery, and provides a resource utilization method of copper in etching waste liquid, the etching waste liquid enters a water inlet tank of a ceramic membrane system, the etching waste liquid is pumped into the ceramic membrane system through a feeding pump and a circulating pump, impurities such as large particles and suspended solids in the waste liquid are removed through ceramic membrane filtration, and the copper in the waste liquid is recycled. The obtained ceramic membrane system produced water enters the ceramic membrane system produced water tank, the etching waste liquid is pretreated by adopting a ceramic membrane technology, and due to the fact that the etching liquid is high in acidity and complex in component, compared with other technologies, a ceramic membrane has the excellent performance of acid resistance, alkali resistance, organic solvent resistance, high temperature resistance and the like, stable operation of the system can be guaranteed, and meanwhile, the production water can be recycled. The pore size of the ceramic membrane is nanoscale, the filtering precision is high, suspended matter impurities in waste liquid can be removed, the turbidity of water produced by the ceramic membrane system is smaller than 1 NTU, the water inlet requirement of a back-section nanofiltration system is met, and stable operation of the nanofiltration system can be guaranteed.