A strategy of using preferential adsorption of additives for selectively depositing gold metal particles on specific crystallographic planes of Cu2O and Zno crystals was demonstrated. Cu2O crystals and ZnO crystals were first electrochemically deposited on a conducting substrate, and gold particles were electrochemically or photochemically deposited on these crystals with the presence of appropriate additives. Preferential adsorption of sodium dodecyl sulfate on {111} planes of Cu2O crystals, which was previously used to form octahedral shapes of Cu2O Crystals, effectively inhibited gold deposition on {111} planes of Cu2O, resulting in selective gold deposition on {100} planes. In a similar manner, the use of Cl- ions that adsorb selectively on polar {0001} planes of ZnO resulted in selective deposition of gold particles on the {01-10} planes of ZnO rods, The simple chemical method for selective metal deposition described in this study is based on utilizing preferential adsorption of additives as an in situ generated mask to protect certain atomic planes from metal deposition, which significantly simplifies the procedure to assemble precisely controlled composite structures.