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Copper oxide (Cu2O) is known as a semiconductor that potentially employed as photocatalyst material in synthetic dyes photodegradation. The objectives of this work were to synthesise of Zn-doped Cu2O using electrodeposition technique and to investigate its photocatalysis performance in methylene blue (MB) solution. The electrodeposition processes were carried out in sulfate solution with two different pH, namely 4 and 5. Difference morphologies of hexagonal and pentagonal deposits were formed from the solution with pH 4 and 5, respectively. The deposits were composed by Cu2O and Cu phases, at which the high Cu2O composition was obtained at pH 4. Photodegradation investigation showed that 63.23% and 46.49 % MB was successfully decomposed with Zn-doped Cu2O electrodeposited at pH 4 and 5, respectively. This result indicated that photocatalytic activities of Zn-doped electrodeposited at pH 4 was higher than that of pH 5.