Sensitivity and pressure range are two significant parameters of pressure sensors. Existing pressure sensors have difficulty achieving both high sensitivity and a wide pressure range. Therefore, we propose a new pressure sensor with a ternary nanocomposite Fe O /C@SnO . The sea urchin-like Fe O structure promotes signal transduction and protects Fe O needles from mechanical breaking, while the acetylene carbon black improves the conductivity of Fe O . Moreover, one part of the SnO nanoparticles adheres to the surfaces of Fe O needles and forms Fe O /SnO heterostructures, while its other part disperses into the carbon layer to form SnO @C structure. Collectively, the synergistic effects of the three structures (Fe O /C, Fe O /SnO and SnO @C) improves on the limited pressure response range of a single structure. The experimental results demonstrate that the Fe O /C@SnO pressure sensor exhibits high sensitivity (680 kPa ), fast response (10 ms), broad range (up to 150 kPa), and good reproducibility (over 3500 cycles under a pressure of 110 kPa), implying that the new pressure sensor has wide application prospects especially in wearable electronic devices and health monitoring.