Currently the researches on learning and memory paid close attention to the testing effect of memory, which enlightened people to reweigh the nature of test. Testing memory was not only a measurement of the degree of study but it could promote learning better than repeated encoding. Testing memory during study made more accurate JOL relative to study by rote. Although self-testing might to a certain extent slowed down the process of learning, it can actually realize efficient learning. The authors believed that giving tests during the class or encouraging students to use self-testing strategy could benefit the long-term performance.