Abstract: Microteaching plays a key role in the training of classroom teaching skills for normal university students. There are two deficiencies of existing microteaching mode. Firstly, the lack of self-ability cognition before receiving training and the lack of targeted guidance leading to the insufficient and unbalanced development of classroom teaching skills for trainees with different skill levels. Secondly, the training process failed to achieve a virtuous circle of revising target, upgrading skills, revising again and upgrading again. In view of these shortcomings, the experimental designing of microteaching based on self-development and cycle improvement (SD-CI) model was proposed, and the spiral training implementation strategy was implemented to improve the training pertinence and effectiveness. Through experiments, it is proved that the trainees’ various classroom teaching skills are fully and balanced developed when microteaching is carried out on the basis of SD-CI mode, and the training effect is significantly improved.