To cultivate the university students' ability of scientific research and innovation is one of the important tasks of higher education in our country. Based on the grounded theory, this study deeply explores the influencing factors of the scientific research innovation ability of outstanding college students who have made great achievements in scientific research, so as to improve and optimize the training method of scientific research ability of college students. It is found that the scientific research innovation ability of students with excellent achievements in scientific research is mainly affected by environmental characteristics, ability structure and quality structure. Environmental characteristics mainly refer to the resources, opportunities and information obtained by students in scientific research practice. Ability structure emphasizes students' judgment, reasoning power and practical power when solving scientific research innovation problems, and quality structure includes personality and quality factors. It is the "source power" of students' scientific research and innovation. It is suggested that educational authorities and colleges and universities implement a multi-subject collaborative training mechanism, pay attention to cultivating college students' ability of planning, self-learning and practice, set up more easy and targeted psychological counseling centers, and encourage college students to be innovative, dare to be the first, and be good at doing well while cultivating young people who truly have "four self-confidence".