Abstract The technology of electrically conductive fibre production has been devised at the Textile Research Institute (Łodź, Poland), and has patent protection in Europe and the USA. Elec-trically conductive nonwovens (stitch-bonded and needled) made from these fibres differ from each other not only in production technology, but also in electric properties. Measu-ring the shielding effectiveness of these fabrics proved a possibility of their application as electromagnetic shields. Their practical application was presented for physiotherapy where short-wave and microwave diathermy is used. Key words: electro-conductive textiles, electromagnetic shields, physiotherapy. and considerably lower cost, in compari-son with shields made of metal sheets and wire mesh.Materials of high electrical conductance can act as electromagnetic field shields only in the range of higher frequencies (>300 MHz). In practice, in this case they equally attenuate the electric component E as well as the magnetic component H. For fields of frequency <30 MHz, at-tenuation of the magnetic component H is very difficult, and is possible only thanks to the use of ferromagnetic materials. For some applications, only the attenuation of the electric component E is satisfactory. Fabrics made of Nitril-Static (PAN fibres modified by Cu