The object of this essay is to compare the poems of G. M. Hopkins and Dylan Thomas on the viewpoint of their vitality. One of the most important features of Hopkins is his sense of vitality in every natural thing, being called his original inscape and instress. That is, he gave life to every natural things (cloud, wind and grass), which move or tremble restlessly like real lives. We can feel his pleasure on every thing under the creative fingers of thankful God, which is expressed as vitality of nature in his poems. We can see the similar taste in the poems of Dylan Thomas. The most impressive feature of this poet is also the vitality of every creature. Thomas also notified the energy of creatures and enjoyed writing it in his poems. He is one of the most important Hopkins followers, who had realized the idea of inscape in his poems. Hopkins`s poetic world is not wide or various and Dylan Thomas did not go along with the philosophical or pedantic stream of his contemporary poets. But their poetic world is very original and affected much to the following generations. Both of them happened to be in pleasure and bliss of the beautiful nature of Wales, for their poetic achievement.