Long-chain dialkyl amine containing hydroxyl groups was synthesized with peach aldehyde as substrates, Ti(n-OBu)4 as catalyst, NaBH4 as reductant, ammonium chloride/triethylamine as amine sources. The effects of catalyst and reaction temperature on the yield of reductive-amination were investigated. The optimized procedure was obtained as follows: reaction was carried out at 20 ℃ for 24 hours, n(peach lactone)∶n(NH4Cl)∶n(Et3N)∶n(Ti(n-OBu)4)∶n(NaBH4)=1.0∶1.45∶1.45∶1.45∶2.0，to give the titled compound with a yield of 57.7%. The structure of the product was characterized by FTIR, 1HNMR, 13CNMR and MS. The final process was validated and executed at up to 100 g scale with the yield of 61.5%.