The invention discloses an efficient gold separating collecting agent for gold-bearing porphyry type copper sulphide ore and application thereof. The efficient collecting agent is prepared from 15-40%of an xanthic acid collecting agent, 15-40% of a sulfhydryl compound collecting agent, 10-30% of diethyldithiocarbamic acid-O-isopropyl ester, 10-30% of diltiazem cyanoethyl ester, 10-30% of a dithiophosphate collecting agent and 15-35% of dimethyl sulfoxide. By means of the synergic effect between different collecting agents, the gold floating effect is improved, meanwhile, the good floating index is achieved for copper, loss of precious metal and useful metal in the floating process is reduced, and certain economic benefits are brought to factory selection; compared with improved floating processes and devices, common floating medicaments are used for compounding to obtain the efficient gold separating collecting agent, manpower and material resources are greatly saved, the adopted floating medicament is easy to prepare, and raw materials are cheap and easy to obtain. Accordingly, the economical and efficient gold separating collecting agent and the gold separating method are obtained.