A floating type humidifier comprising: a floating body having a hollow and a water inlet hole in a lower portion through which water is introduced from the outside so that the floating body floats in a water container; an ultrasound vibrator inserted in the water inlet hole of the floating body to change the water introduced from the water container into water particles or vapour; a guide coupled to an upper end portion of the water inlet hole of the floating body to guide the water particles or the vapour generated by the ultrasound vibrator to the outside, and formed like a pipe having a guide hole in a side surface; and a discharge unit provided on the floating body under the guide hole so as to guide the water particles or the vapour from the guide to the guide hole and to discharge the water particles or the vapour to the outside, wherein the floating body further comprises a case coupled to an upper portion of the floating body so as to accommodate the guide and comprising a plurality of air inlet holes in an outer portion for inducing external air, and wherein the case further comprises a cap coupled to an upper end portion of the case and comprising an evaporation hole for controlling an evaporation amount and an evaporation direction of the water particles or the vapour discharged through the guide, characterized in that the guide further includes a shielding portion protruding from an upper portion of the guide hole to the outside so as to collect the air supplied through the discharge unit toward the guide hole, wherein the case comprises a first light emitting diode on an outer surface to illuminate the water particles or the vapour evaporated through the guide, wherein the ultra sound vibrator comprises a second light emitting diode on an upper surface to emit light through an upper portion of the guide, and wherein a plurality of protrusions contacting an outer surface of the ultrasound vibrator, to support the ultrasound vibrator, are formed on an inner wall surface of the water inlet hole, and a packing is coupled to a lower edge of the water inlet hole to absorb shocks from the ultrasound vibrator. a floating body having a hollow and a water inlet hole in a lower portion through which water is introduced from the outside so that the floating body floats in a water container; an ultrasound vibrator inserted in the water inlet hole of the floating body to change the water introduced from the water container into water particles or vapour; a guide coupled to an upper end portion of the water inlet hole of the floating body to guide the water particles or the vapour generated by the ultrasound vibrator to the outside, and formed like a pipe having a guide hole in a side surface; and a discharge unit provided on the floating body under the guide hole so as to guide the water particles or the vapour from the guide to the guide hole and to discharge the water particles or the vapour to the outside, wherein the floating body further comprises a case coupled to an upper portion of the floating body so as to accommodate the guide and comprising a plurality of air inlet holes in an outer portion for inducing external air, and wherein the case further comprises a cap coupled to an upper end portion of the case and comprising an evaporation hole for controlling an evaporation amount and an evaporation direction of the water particles or the vapour discharged through the guide, characterized in that the guide further includes a shielding portion protruding from an upper portion of the guide hole to the outside so as to collect the air supplied through the discharge unit toward the guide hole, wherein the case comprises a first light emitting diode on an outer surface to illuminate the water particles or the vapour evaporated through the guide, wherein the ultra sound vibrator comprises a second light emitting diode on an upper surface to emit light through an upper portion of the guide, and wherein a plurality of protrusions contacting an outer surface of the ultrasound vibrator, to support the ultrasound vibrator, are formed on an inner wall surface of the water inlet hole, and a packing is coupled to a lower edge of the water inlet hole to absorb shocks from the ultrasound vibrator.