This study implemented action research to explore how the contract learning affects 37 undergraduate students in the course of “potential development of multiple intelligences” in Taiwan. Data were collected from students’ learning contracts, reflective notes, homework and questionnaires and were subsequently analyzed both quantitatively and qualitatively. The results show that it is possible for learning contracts to guide undergraduate students’ self-directed learning. The self-directed learning process and learning patterns of learning contract help shape self-directed personality traits and abilities of undergraduate students. In addition to achieve self-directed learners’ contract learning goals, they also completed an expansion of their own intelligence, have a better understanding of themselves, know more friends, experience the self-actualization, have willingness to take risks, have courage to try new things, have a sense of achievement, know how to plan their future, and become confident life-long learners.