Provided is a stretchable electrode that does not bring about an increase in cost, a decrease in electrode characteristics, etc. due to degradation of resin caused by excessively long drying times at excessively high temperatures, and that is excellent in terms of washing durability, is safe for the skin and does not cause skin rash and skin inflammation due to a low molecular weight organic compound. The stretchable electrode is characterized by being used to be put in contact with the skin to measure biological signals, having an area of 1 to 500cm2, having a thickness of 10 to 800μm, and in that the content of organic compounds contained in the stretchable electrode and having a molecular weight up to 2000 is of 1 to 5000ppm. By limiting the residual concentration of the low molecular weight organic component in the electrode, the washing durability is improved. Furthermore, onset of skin rash and skin inflammation, caused by gradual discharging of low molecular weight organic component from the electrode, and not by residual concentration of low molecular weight organic component in the electrode, is limited by controlling the concentration in the garment determined by the discharge speed of the low molecular weight organic compound.