學術研究本來有很多角度，自從諸葛亮在永安宮南的石磧灘上作八陣圖一事被傳說下來以後，歷代知名之士，親身往現地探視的，也絡繹不絕。至今在兵學、民俗學、文化學上，都衍生了大量的說法。本文採用現地研究法，帶領讀者實地去看傳說中八陣圖所在的八陣磧灘，在實際山川的基礎上進行相關討論。文中首先介紹我親自使用GPS測得的八陣磧數據，以及利用衛星地圖和十萬分之一地形圖繪出的八陣磧全貌。在這個基礎上，再導出唐代以前八陣圖傳說的原始面貌，然後順著朝代先後，一一細數唐、宋、明、清的重要登臨者。這些熱心的現場觀察者當中，如桓溫、李貽孫便曾指出八陣圖在整個八陣磧灘的位置。然而，對於石陣的有無，除了早期桓溫不可知以外，依他們的描述，眾人其實都無所見。最後，我從吳蜀戰爭和現場條件，認為諸葛亮可能在八陣磧上做了軍事設施，來阻止吳人渡江攻擊永安宮。

Scholars can tackle one object from different perspectives. Since legend has it that Zhuge Liang built the Eight Battle Diagrams on the stony shoal in the south of Yong’an Palace, Kuizhou, many celebrities in the following dynasties visited it. Different from various sayings about it from the perspectives of military science, folklore, and culturology, this paper, from the perspective of on-site research, will lead the readers to the stony shoal where the Eight Batalle Diagrams is located and make the discussion in terms of the real mountains and rivers.Firstly it displays the data of the Diagrams measured by myself with GPS, and the panoram of it drawn with satellite map and 1/100000 topographic map. Secondly, based on it this paper achieves the legendly original appearance of the Digrams, and introduces the visitors from different dynasties. Of them like Huan Wen (312-373), Li Yisun (785-804), once mentioned the location of the Digrams on the shoal. Concerning the existence of the stone plies, these famous visitors’ sayings are not true according to the their descriptions except Huan Wen whose record of it is not available now. Finally, I, by analysis of the historic record of the war between Wu (229-280) and Shu (221-263) and the field conditions, think that Zhuge Liang might made military enforcement on the shoal in order to defense Wu’s attack on the Yong’an Palace after crossing the Yangtze River.