PROBLEM TO BE SOLVED: To provide a skin cleansing tool and an ultrasonic beauty treatment tool capable of achieving sufficient cleansing effect (vibration pressure).SOLUTION: A skin cleansing tool comprises: an ultrasonic element body 11； a metallic ultrasonic radiation pedestal 21 whose one side lower surface is provided on the ultrasonic element body in a fixed state, and which has a recess 25 having a substantially arc-shaped cross section, on one side upper surface opposite to the one side lower surface； a filling part 32 which is formed into a solid state and formed of a resin material having a vibration transmission ratio different from that of the ultrasonics radiated from the ultrasonic radiation pedestal, and which is filled in the recess having a substantially arc-shaped cross section in a state of contacting a curve-state contact surface of the recess having a substantially arc-shaped cross section； and a cover-state vibration medium 31 which is continuous outward in a flange-like state from the filling part, which covers at least the one side upper surface, on which the ultrasonics radiated from the ultrasonic radiation pedestal 21 converge, and in which a surface of the filling part containing a focus P of the ultrasonics may be pressure to an object part of a living body.SELECTED DRAWING: Figure 6
