With the continuous expansion of university enrollment, the entrance education of freshmen has become an important part of education management. This paper focuses on the entrance education of freshmen and the ideological education strategy of counselors, aiming at discussing how to better guide students to adapt to the new learning and living environment and cultivate their positive ideological quality and social responsibility. First of all, through the in-depth analysis of the characteristics and needs of freshmen, we realize that freshmen face many challenges, including academic pressure, interpersonal relationship, career planning and so on. Secondly, this paper discusses in detail the responsibilities and tasks that counselors should undertake in the entrance education of freshmen. Specific ideological education strategies are put forward from organizing thematic lectures and symposiums, guiding students to participate in social practice and volunteer activities, paying attention to students' mental health, and establishing community and communication platforms. Finally, this paper emphasizes that ideological education is a long-term and continuous process, which requires counselors to constantly adjust their strategies to adapt to the development and changes of students. At the same time, interdisciplinary cooperation and the connection with social resources, as well as the comprehensive use of online and offline multi-means are also important ways to improve the effect of ideological education.