In this paper,related researches on M-learning and mobile vocabulary learning are generally reviewed,and five hypotheses concerning learners' satisfaction towards M-learning are put forward.Hypotheses are tested based on learners' data after their experience of using an English words learning App.The findings indicate that perceived ease of use,perceived usefulness and self-efficacy have positive significance on learners' satisfaction,but the facility and learners' learning attitude have no significant influence on learners' satisfaction toward m-learning.