The invention discloses a segmented temperature compensation system which comprises a constant-temperature current source, a thermotropic current source, a voltage input end, a voltage output end, a resistance, a plurality of P-shaped electricity mirror image units and a plurality of N-shaped electricity mirror image units, wherein the constant-temperature current source provides electric current irrelevant to temperature, the thermotropic current source provides electric current in linear direct ratio to temperature, the voltage input end receives the voltage needing temperature compensation, the voltage output end outputs the voltage after segmented temperature compensation, the resistance transforms compensating current to compensating voltage, and has addition and subtraction operation with the voltage input from the voltage input end, the P-shaped electricity mirror image units and the N-shaped electricity mirror image units perform proportional mirror image on the current and output the current after mirroring. The segmented temperature compensation system can perform segmented temperature compensation on the voltage, and separately adjusts the compensation factors of all segments, so that the voltages of different segments have different temperature factors, and the demands of a follow-up circuit are met.