Digital education reform has comprehensively promoted the innovation of college English teaching modes. The traditional teacher-centered cramming teaching is unable to adapt to the cultivation of college students' core English literacy and lifelong independent learning ability. This study adopts literature research

questionnaire survey

teaching experiment and in-depth interview to explore the correlation between flipped classroom and the cultivation of college students' independent English learning ability. It analyzes the current problems in the practical application of flipped teaching in college English

constructs an optimized three-stage flipped classroom teaching model targeting autonomous learning cultivation

and verifies its effectiveness through empirical experiments. The research results show that scientific flipped teaching can significantly stimulate students' English learning motivation

and improve their ability of learning planning

resource utilization

self-supervision and learning reflection. Based on the research findings

this paper puts forward targeted optimization strategies from the aspects of resource construction

teaching process design

teacher role transformation and evaluation system improvement

so as to provide theoretical reference and practical guidance for college English teaching reform and the systematic cultivation of students' autonomous learning ability.