Cu2O thin films is preparated through electrodeposition with conductive glass of coating indium tin oxide as work electrode.The effects of various factor upon Cu2O film morphology are investigated.The best conditions of electrodeposition Cu2O film are discussed.The deposition potential is determined by Linear sweep voltammetry.The results indicate that when pH is 5.50~ 6.00, the concentrations of Cu (CH3COO)2 is 0.015 ~ 0.04 mol/L,and the deposition potential is-0.075 ~ 0.225 V (vs SCE),Cu2O thin films morphology is dendritic crystal.