||Organic-inorganic hybrid halide perovskites (CH3NH3PbX3, X = Br, I) Quantum Dots (QDs) are prepared by the Split Ligand Mediated Re-Precipitation (Split-LMRP) method. Oleic acid was used to control the polarity of the nucleation environment and was simultaneously employed as a stabilizer. The Split-LMRP technique allowed purification via the stable precipitation of QDs from a colloidal solution. The synthesis process could be performed under ambient conditions, and the resulting CH3NH3PbX3 (X = Br, I) QDs exhibited strong photoluminescence (PL) emission with high PL quantum yields. These very stable, bright perovskite QDs synthesized via the split-LMRP technique are expected to have potential applications in solar cell, photoresistor, and electroluminescent devices.