Abstract: The application of TRIZ in the model construction of undergraduate’s innovation ability estimation was mainly studied. Firstly, the core idea of TRIZ was introduced, and then a problem solver framework was proposed which was based on TRIZ. Finally, the model of undergraduate’s innovation ability estimation is constructed by TRIZ’s instruction. The new model conquered the subjective factors’ negative influence that occurred in the existed literature, and it is more understandable and operable.