Abstract: In an apparatus of stimulating a reaction point of a human body by a certain frequency signal, where frequencies respectively matching with organs are different and the matching frequencies are different in accordance with conditions of disease, a signal generating portion constituted by a melody IC is provided, a switching device is turned on and off in correspondence to a relaxation rhythm signal output from the generating portion, and a signal is obtained from a secondary side of an output transformer in synchronous with the on and off operations, thereby making it possible to treat by a plurality of signals in a band of a plurality of frequencies.