The invention discloses a crane electroplating wastewater treating agent capable of efficiently adsorbing metal ions. Glass powder and iron oxide magnetic powder are modified and then added to raw materials to replace partial apatite, so that the exploitation quantity of natural apatite is reduced, and the adsorption performance of a product is effectively improved; meanwhile, sweet potato waste and coconut dust are organically modified, then used as a binder to be added to the raw materials and blended with an effective chemical adsorbent, the compatibility with organic pollutants is good, the adsorption rate for the organic pollutants is high, a binding body having rich pores and high strength is formed after treatment with granulation and high-temperature roasting technologies finally, a compound is formed by the added binder and other substances in the roasting process, the phase change of natural apatite powder in different temperature zones is inhibited, internal stress is reduced, and the pulverization degree is reduced; the produced treating agent has the efficient treating effect and the good adsorption performance, so that wastewater is discharged after reaching the standard; the agent is low in cost and high in practicability and has significant economic benefits.