The present invention relates to a sensor with high sensitivity and high linearity. The sensor comprises a coil, a skeleton component, a housing and a cable. The coil is pasted and fixed at the uppersurface of the skeleton component and is subjected to colloid seal to form the skeleton component, the skeleton component is installed in the housing and is fixed through adoption of the gluing method, an installation groove is made at the lower bottom surface of the skeleton component, a switching welding piece is installed in the installation groove, and the cable is welded at the switching welding piece corresponding to the skeleton component through adoption of the soldering method. The sensor with high sensitivity and high linearity improves the flexibility and the quality factor of the sensor, achieves the good end face flatness and the winding uniformity of the single-layer coil, reduces the distribution inductance and improves the linearity of the sensor; and moreover, the sensor with high sensitivity and high linearity effectively reduces the dielectric loss in the high-frequency excitation while ensuring the size precision, improves the quality factor of the sensor and improves the sensitivity of the sensor.