In order to examine the level of physics self-efficacy of senior middle school students and explore the differences in gender, grade and academic achievement, 357 students in Rizhao No.1 middle school were selected as the subjects of the questionnaire survey in which the physics self-efficacy scale had been used. The results show: The level of physics self-efficacy of No.1 middle school students in Rizhao is general. There is significant gender difference in physics self-efficacy of senior middle school students, boys’ physics self-efficacy is significantly higher than girls’. There is no significant grade difference. There are significant differences among different achievement levels. Generally, the better achievement one gained, the higher physics self-efficacy one had.