A dispenser capable of sucking back the contents remaining at an end portion of a nozzle, comprising: ∘ a body which is engaged to a top of a container body; ∘ an engaging body which is engaged to the body and fixes a cylinder and is hollow; ∘ the cylinder which is engaged to a bottom of the engaging body and has a content input hole formed at the bottom for inputting the contents and a valve member which is opened and closed by the pressure of contents in the content input hole; ∘ a stem which passes through the hollow interior of the engaging body and has a support shoulder at an inner surface; ∘ a piston rod which is engaged to the stem, a bottom of the piston rod being equipped with a spring support part, and a top of the piston rod having a spring engaging protrusion which protrudes in an upward direction; ∘ a sealing cap which is installed at the bottom of the stem, the outer surface of the sealing cap coming into close contact with an inner surface of the cylinder; ∘ a first spring which is installed in the interior of the cylinder and serves to provide an elastic force to the piston rod; ∘ a second spring which is installed surrounding the spring engaging protrusion of the piston rod, a bottom of the second spring being supported by the piston rod, and a top of the second spring being supported by the support shoulder of the stem for thereby providing an elastic force in an upward direction; ∘ a button which is engaged to the top of the stem and has the nozzle for discharging contents; and ∘ wherein the second spring is contracted by the support shoulder when the stem descends and then recovers, thereby allowing the stem to ascend; the contents remaining at the end portion of the nozzle being thereby sucked back as much as the distance defined as the support shoulder of the stem and the spring engaging protrusion of the piston rod are spaced apart; and ∘ wherein the sealing cap is made from an elastic material and is contracted by a pressure of the stem when the stem descends and then recovers, the stem ascending thereby by a change of the length of the sealing cap, thereby sucking back the contents remaining at the end portion of the nozzle. ∘ a body which is engaged to a top of a container body; ∘ an engaging body which is engaged to the body and fixes a cylinder and is hollow; ∘ the cylinder which is engaged to a bottom of the engaging body and has a content input hole formed at the bottom for inputting the contents and a valve member which is opened and closed by the pressure of contents in the content input hole; ∘ a stem which passes through the hollow interior of the engaging body and has a support shoulder at an inner surface; ∘ a piston rod which is engaged to the stem, a bottom of the piston rod being equipped with a spring support part, and a top of the piston rod having a spring engaging protrusion which protrudes in an upward direction; ∘ a sealing cap which is installed at the bottom of the stem, the outer surface of the sealing cap coming into close contact with an inner surface of the cylinder; ∘ a first spring which is installed in the interior of the cylinder and serves to provide an elastic force to the piston rod; ∘ a second spring which is installed surrounding the spring engaging protrusion of the piston rod, a bottom of the second spring being supported by the piston rod, and a top of the second spring being supported by the support shoulder of the stem for thereby providing an elastic force in an upward direction; ∘ a button which is engaged to the top of the stem and has the nozzle for discharging contents; and ∘ wherein the second spring is contracted by the support shoulder when the stem descends and then recovers, thereby allowing the stem to ascend; the contents remaining at the end portion of the nozzle being thereby sucked back as much as the distance defined as the support shoulder of the stem and the spring engaging protrusion of the piston rod are spaced apart; and ∘ wherein the sealing cap is made from an elastic material and is contracted by a pressure of the stem when the stem descends and then recovers, the stem ascending thereby by a change of the length of the sealing cap, thereby sucking back the contents remaining at the end portion of the nozzle.