Background: Urinary stone affects about 12% of the world's population and has become a worldwide health problem. Lifestyle behaviors can contribute to the risk of urinary stone formation; addressing these behaviors adequately can provide a simple and more cost-effective measure for the prevention of urinary stones and the reduction of their recurrence among urinary stone patients. The current study aimed to evaluate the effect of the teaching program on adherence of healthy lifestyle behaviors and clearance of small lower ureteric stone. Research design: Quasi-experimental design (two groups pre-test, post-test) was used to achieve the aim of this study. Sample: A purposive sample of 60 patients was divided into two groups (30 patients in the study group and 30 patients in the control group). Tool (I): A structured interviewing questionnaire that includes part one: demographic characteristics of the patients, part two: included present medical history and previous medical history. Tool (II): Adherence of healthy lifestyle behaviors scale: it was divided into three subscales regarding consumption of restricted foods, consumption of fluids, and healthy usual self-activities. Tool (III): Patients' outcome sheet. Results: There are statistically significant differences between both groups post-teaching program regarding satisfactory adherence level of healthy lifestyle behaviors. The clearance of a small lower ureteric stone occurred in the study group more than in the control group and there was a statistically significant difference. Conclusion: The study concluded that the teaching program has a positive effect on adherence of healthy lifestyle behaviors to enhance stone clearance and prevent its recurrence. Recommendations: Creation of an educational unit for urinary tract stone patients in the nephrology and urology hospital. Conducting similar studies on a larger probability sample is recommended to achieve generalization of the findings