The Western Qin was a small state established by Xianbei Qifu(鮮卑乞伏)in northen China in the "era of the 16 states." Due to its location on one the arteries of the Silk Road, the Western Qin state saw a flourish of Buddhism far beyond her contemporary states did. Most significantly, a major Buddhist cave from this era─the Bingling monastery cave in today's Yongjing, Kansu Province, has been preserved to this day. Based on historical documents and archeological evidence, this thesis provides an analysis of, raises some worth-noting questions on, the development of Western Qin Buddhism from three aspects: Shengjian's sutra translations, Bingling monastery cave, and Zen Buddhism in the Western Qin. It is the most thorough exploration of Western Qin Buddhism to date.