The current research aimed to reveal mental alertness and its relationship to both cognitive habits of mind and self-efficacy among the kindergarten teacher. The research sample consisted of (480) kindergarten teachers in the educational administrations (Gharb Administration in Zagazig - Deyarb Negm Administration - Minya El Qamh Administration) with varying experiences (experience Less than ten years - With more than ten years of experience, the researcher used the following tools: the mental alertness scale (prepared by the researcher), the cognitive habits of mind scale (prepared by the researcher), the self-efficacy scale (prepared by the researcher), and the results of the research resulted in that: there are statistically significant differences between the averages The grades of kindergarten teachers (less than ten years of experience - more than ten years of experience) in the mental alertness scale in the total score of the mental alertness scale and its four dimensions (acting consciously, accepting without making prejudgments, observing, describing), There are statistically significant differences between the average scores of kindergarten teachers (less than ten years of experience - more than ten years of experience) in the cognitive habits of mind scale and in the total score of the mental alertness scale and its four dimensions (perseverance - flexible thinking - applying previous knowledge to new situations - control). Recklessly), there are statistically significant differences between the average scores of kindergarten teachers (less than ten years of experience - more than ten years of experience) in the self-efficacy scale and in the total score of the mental alertness scale and its four dimensions (the emotional dimension - the social dimension - the academic dimension - the determination dimension). And perseverance - after initiative - after self-confidence), there is a relationship A positive, statistically significant correlation between the grades of kindergarten teachers (less than ten years of experience - more than ten years of experience) on the two scales (mental alertness - cognitive habits of mind). There is a statistically significant positive correlation between the grades of kindergarten teachers (less than ten years of experience). -More than ten years of experience) in the two scales (mental alertness - self-efficacy). There is a positive, statistically significant correlation between the grades of kindergarten teachers (less than ten years of experience - more than ten years of experience) in the two scales (cognitive habits of mind - self-efficacy). The results also indicate that the higher the mental alertness scores of kindergarten teachers, the higher their scores in cognitive habits of mind.