“Twenty Thousand Leagues Under the sea” is one of his famous trilogy, the most representative of his colorful imagination and careful wording characteristics. The design of submarine “Nautilus” and wonderful description to the Underwater World, not only attracted the little readers, but also enlightened engineers on practical submarine manufacturing. In this sense, Verne is worthy of scientific age prophet. Verne's works often revealed a progress tendency to struggle against imperialism, colonialism and slavery, but limited by the times, there are also some one-sided description to the natives and wrong understanding to the environment protection. Gold can't be pure and man can't be perfect, he is still a great writer full of compassion and the spirit of democracy.