Abstract: The near infrared readout circuit reads avalanche signals of avalanche-photon-diode operating in the Geiger-mode. Two ps-grade programmable ECL delay chips were used to get adjustable gate pulse, control APD's dead time, quench the avalanche signals and decrease the after-pulsing. The paper detailed describes gate pulse generated block, dead time controlment block and avalanche signals readout block. A moderate delay and edge trigger flip-flop were used to read avalanche-photon-diode signals. During the whole experiments, avalanche-photon-diode worked in the temperature -55C, the gate pulse width is 10 ns, the gate frequency are 1 MHz and 10 MHz, the wavelength of laser is 1 550 nm and the single photon detector is PGA-400 InGaAs avalanche-photon-diode.