Piezoresistor

The utility model discloses a piezoresistor which comprises an outer ring, the outer ring is provided with an upper group and a lower group, a heat conduction ring is arranged between the two groups, a lead is arranged in the heat conduction ring, one end of the lead is provided with a resistor main body, and the outer edge of the lead is provided with a sealing device. The upper end and the lower end of the resistor main body are provided with heat dissipation devices, the sealing device structure can be used for connecting the outer edge connected with a lead wire more tightly, and the wrapping performance is stronger, so that external air can be prevented from entering the device, and the service life of the device can be prolonged; through the heat dissipation device structure, a heat dissipation assembly can be additionally arranged on the surface of the device, a heat dissipation surface extends out of a connecting surface with poor ventilation, and the situation that heat dissipation becomes poor due t