The invention discloses a distributed amplifier circuit for perfecting linearity. The distributed amplifier circuit comprises a plurality of gain units, an input on-chip inductor connected to an input end of each gain unit, and an output on-chip inductor connected to an output end of each gain unit, wherein an interstage matching capacitor is arranged in front of or behind at least one input on-chip inductor, the input end of each gain unit is connected with a biasing resistor, and a bias voltage is applied from the other end of the biasing resistor. According to the distributed amplifier circuit for perfecting linearity disclosed by the invention, the gain units of different circuit structures are adopted, different bias voltages are applied to change the static working points of the gain units so as to change the linearity thereof, the interstage matching capacitor is introduced to offset and isolate direct current at the input ends of the gain units, so that different bias voltages can be applied to the input ends of the gain units, and then the degree of freedom of design and debugging is increased.