This paper carries out the questionnaire survey on the undergraduates of Zhuhai College of Jilin University to learn about students' demand for online teaching resources of Data Structure and Algorithms course. In the process of online teaching resources construction, we put students first, respect students' personality differences, pay attention to exploring students' potential, cultivate the all-round development, and provide students with resources to meet different needs at different levels. Besides, this paper analyzes the online application of this course, summarizes the pros and cons of open online courses, and puts forward the improvement plan, with a vision to facilitate development of open online course of Data Structure and Algorithms and provides high-quality teaching resources for learners.