Abstract: According to the characteristics of 90 undergraduates，we elaborate new teaching modes and teaching methods that are adapting to the low - grade undergraduates. Relying on internet resources to strengthen the communication and exchange between teacher and students. Relying on college physics demonstration experiment teaching base and undergraduate innovative experiment，we build a platform for the research and innovation of the university physics low grade undergraduates.

Key words: college physics, low-grade undergraduates, research and innovation of practical ability, cultivation platform