JIN Yuelin and FENG Qi's epistemology is significant in Chinas history of epistemology in the 20th century. Both JIN and FENG realize the gap between sense perception and external things, that between sensibility and intellectuality, and that between theoretical reason and practical reason in Kant's epistemology. Consequently, they devote themselves to bridging these gaps. In this process, they share some similarities in spite of some obvious differences.