林则徐的思想主要表现在两个层面上:一是禁烟思想,二是海防思想.史界对林则徐的禁烟思想著述颇丰,但对林则徐的海防思想涉及甚少.本文力图就林则徐的海防思想作一概述,期望能弥补史界研究之欠缺. Lin Zexu’s thought mainly manifests in two aspects: one is the thought of no-smoking and the other is the thought of coastal defense .When the history circles did quite a lot of Lin Zexu’s thought of banning smoking, it has little to do with the thought of Lin Zexu’s defense of coastal defense. An overview, expectations can make up for the lack of research in the history.