The invention relates to a technology for preparing a copper-dysprosium intermediate alloy through molten salt electrolysis, in particular to the copper-dysprosium intermediate alloy prepared throughmolten salt electrolysis codeposition and a preparation method of the copper-dysprosium intermediate alloy. The preparation method of the copper-dysprosium intermediate alloy comprises the following steps of (1) raw material proportioning, (2) pre-electrolysis, (3) electrolysis and (4) product collecting. According to the copper-dysprosium intermediate alloy prepared through molten salt electrolysis codeposition and the preparation method of the copper-dysprosium intermediate alloy, the cost of raw materials is low, the technological process is short, equipment is simple, no solid waste, liquid waste and gas waste is discharged, no secondary pollution is caused, components of the alloy can be effectively controlled, copper-dysprosium intermediate alloy products with the high purity and thelow melting point are prepared, and after analysis, the purity of the alloy is up to more than 99.5%.