This study explains that teachers' emotion feeling are as important as teachers' thinking on their mental states. However, some research on teachers' emotion feelings were neglected in the past. This study tries to show that the emotion feelings of teachers should be studied. At first, the study analyzes the nature and importance of conscientiousness, which have relationships with teachers themselves and their work. Further, the author indicates that conscientiousness can be separated into two types: (1) Collective, repeatable conscientiousness is not good; is like guilt. (2) The experience of individual, intuitional conscientiousness is the correct way, the rightness. There are five conscience-stricken traps of teaching: (1) Only to pursue the special knowledge of professional technology; (2) Only to emphasize the results of collective unity; (3) Only to confront the open-endedness of teaching; (4) Only to pursue personal perfection; (5) Only to be self-sacrificing. In order to decrease these conscience-stricken traps of teaching, the study tries to provide some solutions: (1) making in-depth reflections on the professional field. Teachers need to use more professional reflection instead of putting the whole time on students; (2) Permitting teachers who had personal freedom to perform their fitting aptitude teaching on teacher- students interaction to decrease the missing without conscientiousness; (3) Developing assist systems in the school environment to reduce disadvantages of open-ended teaching; (4) Overcoming perfectionism by rationality; (5) Developing other activities which have nothing to do with school activities so that teachers can know themselves and their emotions. These aids might be good strategies to adjust teachers' emotion feelings and reconcile conscientiousness-stricken traps of teaching.