本文研究了各种Ti(Ⅳ)化合物:Ti(OR)_4(R=Et,~iPr,~nBu),TiCl_4,CP_2TiC_2,Cp_2Ti(OPh)_2对Meerwein-Ponndorf-Verley-Oppenauer反应的催化活性。试验表明Ti(O~iPr)_4对还原反应显示出极好的催化活性,还原苯甲醛,对氯苯甲醛,对硝基苯甲醛,对甲氧基苯甲醛,糠醛,巴豆醛的产率可达80％以上。Ti(OEt)_4对氧化反应有良好的催化活性,对正辛醇,2-辛醇,苯甲醇,环已醇,肉桂醇的氧化产率在69％以上。同时还考察了各种参数对反应的影响。 In this paper, the catalytic activities of Ti (OR) 4 (R = Et, ~ iPr, ~ nBu), TiCl_4, CP_2TiC_2 and Cp_2Ti (OPh) _2 for Meerwein-Ponndorf-Verley-Oppenauer reaction were investigated. The results showed that Ti (O ~ iPr) _4 showed excellent catalytic activity for the reduction reaction. The yields of benzaldehyde, p-chlorobenzaldehyde, p-nitrobenzaldehyde, p-methoxybenzaldehyde, furfural and crotonaldehyde were Up to 80%. Ti (OEt) _4 has good catalytic activity for oxidation and the oxidation yield of n-octanol, 2-octanol, benzyl alcohol, cyclohexanol and cinnamyl alcohol is over 69%. At the same time also examined the impact of various parameters on the reaction.