The invention discloses a force sensitive resistor tester comprising a compressing mechanism, a pressure sensor and a resistance measuring instrument. The compressing mechanism comprises two driving rollers and two driven rollers. The two driving rollers are driven by a vertically arranged motor. The two driven rollers are fixed on a horizontally arranged air cylinder output shaft. The two drivingrollers are connected through a first belt. The two driven rollers are connected through a second belt. The first belt and the second belt contact the circumferential surface of a force sensitive resistor. The probe of the pressure senor contacts the surface of the first belt or the second belt. The contact surface of the belts and the force sensitive resistor is large, and each induction point contacts the belts in the measuring process so that the measurement value is ensured to be more uniform and accurate. Besides, the air cylinder adjusts the contact pressure of the belts and the force sensitive resistor so that the measuring process is ensured to be continuous, and thus the tester is simple in structure and can realize accurate measurement.