The invention discloses a copper compound adopting 2-acetyl-3-ethyl pyrazine thiosemicarbazone as ligand as well as a synthetic method and application thereof. The synthetic method of the copper compound comprises the following steps: measuring 2-acetyl-3-ethyl pyrazine and thiosemicarbazide, reacting by using methanol as a solvent, after the reaction, transferring into a beaker, volatilizing, crystallizing, obtaining ligand 2-acetyl-ethyl pyrazine thiosemicarbazone crystals, filtering the crystals, and washing the crystals by using methanol; enabling the ligand 2-acetyl-ethyl pyrazine thiosemicarbazone to react with CuCl2 or CuBr2 in the mixed solvent of acetonitrile and methanol, transferring the reactant into the beaker, standing, cooling, volatilizing and crystallizing, collecting thecrystals, and obtaining the target compound. By researching the in-vitro glioma resistance and drug-resistant strain activity of the synthesized copper compound, the result shows that the compound forms thiosemicarbazone ligand with the metal copper, the activity is greatly improved, the glioma resistant activity is excellent, and the drug resistance can be overcome to certain extent.