To provide a fresh flower arrangement vessel allowing a user to easily produce the intended form of flower arrangement despite the presence/absence of trained technique and surely retaining the immobile state of the produced shape of the flower arrangement.

This fresh flower arrangement vessel is constituted of a cylindrical case body 2 having enough weight for sinking in water and a retaining member 3 detachably inserted inside the case body, having water-absorbing property and retaining flowers and trees; and is characterized in that the inside shape of either one of the upper end or the lower end of the case body 2 is formed narrower.