The synthesis, characterization, and its coordination with metal ions of a novel thiourea N,N'-diethoxycarbonyl-N'',N' ''-(1,2-propylidene) dithiourea was reported. The structure of the prepared compound was determined by elemental analysis, infrared spectrum, mass spectrometry, 1H NMR and 13C NMR spectroscopy. Its coordination with metal ions such as Cu2+, Ni2+, Fe3+ was investigated by uv-vis spectrophotometer. The results show that this dithiourea with new structure can react with Cu2+ and Ni2+ separately, and has a best selectivity to Fe3+ ion. Bench-scale flotation tests were also carried out, verifying it has higher copper flotation recovery compared with universal collectors and better selectivity to sulphur.