This study investigates the degree of relationship between study habits and academic achievement of 10th ingrade students. The study employed a descriptive research of survey type. ASHI (Study Habit Inventory) was employed to determine the study habits of students. An academic achievement test was also developed to measure the achievement of the students in terms of scores. A reliability coefficient of 0.91 was obtained using split half method. The population of the study includes all the secondary school students of Karnal city. Sample were selected through purpose random sampling technique. The Hypothesis was tested using Persons Correlation. The findings of this study habits would be of immense help in improving the study habits of the students at secondary level. Improvement in students academic achievements will further had to national development as competent manpower will be produced planning of specific items for study is highly recommended.