In order to understand the influence of professional identity and academic input on vocational values of secondary vocational school students in western China, 468 secondary vocational school students in Tibet were investigated by stratified sampling method. The results show that: (1) the professional identity, academic input and professional values of Tibetan secondary vocational school students are in the middle level as a whole; (2) professional identity and academic input are significantly correlated with professional values, and have a positive predictive effect; (3) academic investment plays 42% intermediary role in the influence of professional identity on professional values.