張載是北宋時期重要的思想家，是宋代儒學運動的復興者和開創者，也是關學的創始人。他的學術思想在儒學的發展史上具有重要的地位，對於後世的思想文化也有著深遠的影響，具有研究的價值。張載的反佛論可說是張載學的問題意識和哲學起點，本文將自思想史的視野探討佛老的興盛、儒學的衰微到宋代理學崛起的時代背景，和張載「窮究釋老，反而求之六經」的學思歷程的轉變。本文主要在說明佛老之學的刺激乃是張載哲學的起點。在張載「出入釋老，反之六經」的學思歷程中，張載一方面展開對佛老世界觀的強烈批判，一方面也回應佛老對傳統儒學缺乏形上本體的建構，以及負面存在關注不夠的挑戰，而以他的「天人合一」之學，展開他為儒學「補課」的工作。

Zhang Zai is an important thinker in Northem Song Dynasty. His academic thought in the history of the development of Confucianism is very important. Zhang Zai's anti-Buddhist theory can be said that problem awareness of Zhang Zai's philosophy. I want to study the background of the rise of Buddhism and Laozi, the decline of Confucianism and from the vision of intellectual history. Zhang Zai studied Buddhism and Laozi, but finally returned to Confucianism. First, Zhang Zai criticized the world view of Buddhism and Laozi. Secondly, he filled a vacancy of the ontological construction and insufficient attention to the negative in Confucianism Zhang Zai accomplished this with the thoughts of 'Tian ren he yi'.