Multifunctional　flexible　sensors　as　wearable　electronic　systems　have　attracted　considerable　attention　for　mimicking　human　skin　to　sense　ambient　stimuli.　However,　sensors　need　to　have　high　resolution,　stability　and　sensitivity　to　realize　fully　biomimetic　skin.　Here,　an　assembled　and　welded　Ag/W　composite　nanowire　flexible　electrode　was　prepared　for　body　motion　monitoring　and　flexible　heaters.　This　Ag/W　composite　nanowire　flexible　electrode　has　a　high　transmittance　of　90.1%　(at　121　Ω·sq−1　sheet　resistance)　and　a　low　sheet　resistance　of　27　Ω·sq−1　(at　60.1%　transmittance).　Although　the　transparency　of　this　electrode　is　not　high,　the　fluctuation　in　relative　resistance　change　rate　at　10%　strain　is　only　5%　after　1000　tensile　cycles.　It　can　be　employed　to　monitor　human　body　motions,　including　bending　of　fingers,　arms,　wrists,　and　throat　action.　Meanwhile,　the　Ag/W　nanowires　composite　film　heater　achieves　a　steady-state　temperature　of　up　to　100 °C　at　a　constant　voltage　of　3.5 V　and　an　instantaneous　heating　rate　of　up　to　36.5 °C·s−1.Graphical　abstract