The present research work deals with John Donne as a metaphysical poet with the critical appreciation of his famous poem “the ecstasy”. The ecstasy is a complex as well as metaphysical poem telling about love-physical and spiritual. The poem deals with – Is love simply the union of two bodies or union of two souls. Some critics like Legonis find in it a plan for seduction with emphasis on the physical lover and he was always concerned with exploring the mystery of love. In his poetry, Donne tries to nature of love, while others like Helen Gardner find in it an affirmation of spiritual love. Infect, it deals with the relationship of body and soul in love. Donne was an unconventional reconcile the two opposites the physical and the spiritual or the secular and the religious. Grierson says in reference of this poem. “The ecstasy” resolves the metaphysical issue of the mutual dependence of body and soul. In this essay, we discussed John Donne as a metaphysical poet and the critical appreciation of his famous poem “the Ecstasy”.