The present invention relates to a device for relaxing the smooth muscles of the human body, and the device directly irradiates light of a predetermined wavelength band onto acupuncture points associated with organs that include the smooth muscles of the human body for inducing the relaxation of the smooth muscles of the human body by using an electrode probe. To this end, the present invention provides a device for relaxing the smooth muscles of the human body, comprising: a controller main body which determines whether or not a light irradiation mode is selected and whether or not an operation is initiated by direct manipulation using a switch, and which outputs a light emitting diode driving signal to an electrode probe connection terminal and wired and wireless electrode probes which are attached to and detached from the electrode probe connection terminal so as to be electrically connected or separated, and which are driven by a light emitting diode driving signal so as to irradiate the light of a predetermined wavelength band that can increase the concentration of a material for relaxing the smooth muscles of the human body. Therefore, the present invention enables diagnosis, treatment, and prevention of diseases by promoting the circulation of blood and lymph in the organs which includes the smooth muscles in the human body since the smooth muscles are relaxed, and is portable so as to be easily used regardless of the location.Linvention concerne un dispositif conçu pour la relaxation des muscles lisses du corps humain. Ce dispositif met en œuvre une sonde à électrode pour appliquer directement, sur les points dacuponcture associés aux organes dans lesquels se trouvent les muscles lisses du corps humain, un rayonnement lumineux dans une bande prédéterminée de longueur donde de façon à induire la relaxation des muscles lisses du corps humain. À cet effet, le dispositif de linvention comprend un corps principal de contrôleur et des sondes à électrode, à fil et
