Abstract：To understand the visible light photocatalytic properties of metal and its oxides on zinc-titanium hydrotalcite-derived mixed oxides （ZnTi-LDO）， and to obtain an LDO photocatalyst that can rapidly degrade dyes under visible light， the Ag， Fe， Ce modified material （M-ZnTi-LDO， M=Ag， Ag2O， Fe， Ce） were synthesized. The structure， morphology， surface chemical state， and optical properties of the materials were characterized by XRD， TEM\HRTEM， XPS， BET， UV-Vis， PL， and the photocatalysis of the materials on methylene blue （MB） under visible light was evaluated. Active species involved in the photodegradation process of MB were determined with the help of the active species trapping experiment， and a possible mechanism of enhanced photocatalytic activity was proposed. The results show that the visible light photocatalytic performance of ZnTi-LDO was inhibited by Fe， Ce oxides or Ag， but Ag2O-ZnTi-LDO under visible light irradiation exhibit amazingly improved activity in comparison with ZnTi-LDO. For Ag2O-ZnTi-LDO， the degradation percentage of MB up to 98% was observed within only 20 min， and the apparent degradation constant of MB on Ag2O-ZnTi-LDO was ca. 7 times larger than that on ZnTi-LDO. Moreover， Ag2O-ZnTi-LDO exhibits excellent stability without a decline in activity after five cycles. ?O2- is the main active species in the photocatalytic process of MB degradation. The enhanced photocatalytic activity is attributed to the n-p heterostructures between Ag2O and ZnTiO3/TiO2.