As one of the most important energy generators, stretchable fuel cell has not been designed due to the reduced connection the electrocatalysts along with elongating. Herein, nitrogen doped double-walled carbon nanotubes coated on a poly(m-phenylene isophthalamide) fiber (NDWNTs/PMIA) has been designed as stretchable electrodes for oxygen reduction reaction (ORR). The strain-ORR activity test shows the ORR peak currents and the number of the transferred electrons of per oxygen molecule over NDWNTs/PMIA electrode keep super stable up to a high strain level of 100% (twice length of the original one). The NDWNTs/PMIA electrode at 100% strain has a comparable peak current to the commercial Pt-C coated PMIA fiber of 0% strain (Pt-C/PMIA), while the ORR capacity over Pt-C/PMIA electrode disappears at only 5% strain. The well maintained ORR capability of the NDWNTs/PMIA electrode is originated from tube-tube contact of NDWNT network from cross-to parallel-pattern induced by stretching, and thus ensures a stable ORR activity. The experimental results provide a new strategy to explore the highly stretchable electrodes that are significant to the development of stretchable fuel cells. (C) 2017 Elsevier B.V. All rights reserved.