In modern medicine, the methods of non-invasive imaging of various human tissues and organs have been significantly developed. We present generalized (own experience and published information) data on the diagnostic capabilities of the method of visualization of the skin in UV light (Wood's light). Irradiation of the skin with UV light with a wavelength of 320—400 nm (peak emission of 365 nm) causes a specific fluorescence in a number of diseases, which leads to a clearer visualization of the lesion foci. In clinical practice, a Wood lamp is traditionally used for this purpose, allowing to examine individual parts of the body. The authors have developed and successfully used in practice a device that allows to visualize and photograph in UV light the entire skin of the patient with subsequent processing and archiving of images. For better visualization of the studied object, the device provides the ability to adjust the radiation intensity and the formation of various options for black and white images. Visualization of the skin in UV light is a simple and informative method for the non-invasive diagnosis of dermatoses. In some cases, it helps not only diagnose a pathology, but also evaluate the effectiveness of treatment. In article provided the main indications for the use of this method in dermatology, which include dermatodyschromia, mycoses, bacterial infections of the skin, porphyria. Described the characteristic features of skin imaging in certain diseases.