For this purpose, a sample of 144 secondary school teachers who Shahin Shahr the randomly selected proportional to size. The data collection tool was a questionnaire. Cronbach's alpha reliability of the study 0/964, respectively. The data obtained were analyzed both descriptive and inferential statistics. The results showed that the positive relationship between effective teaching (r=0/391) significantly (p <0.01) with CT. The components of effective teaching, including teaching of positive correlation (r=0/301), the implementation of a positive correlation (r=0/214), classroom management, positive relationship (r=0/212), effective teaching, positive relationship (r=0/454) evaluation of effective positive correlation (r=0/412) and personality characteristics positive correlation (r=0/329) are significantly associated with critical thinking. These findings suggest that the components of critical thinking is more effective teaching.