Abstract: In today's society, educational equity has become the focus of global attention, and gender bias, as an important form of educational injustice, poses a significant obstacle to the growth of individuals and the ovall progress of society. This paper aims to explore the issue of gender bias in the current situation of American education, focusing on its manifestations, impact mechanisms, and potential improvement strategies. The study uses literature analysis, case study and data analysis to explore the gender bias in education in the United States. The subjects range from primary school to higher education, with data derived from government reports, academic research results, and social surveys. This study found that gender bias exists widespread in American education, not only in curriculum, textbook content, and teacher-student interaction but also profoundly affects students' learning motivation, self-perception and future career development. Therefore, eliminating gender bias and promoting educational equity are of great significance for the long-term development and prosperity of American society.