Laser diode is one of the core devices in optical communications, and is widely used in communication backbone network between metropolitans. Optoelectronic integrated circuit computer-aided design is an important method for optoelectronic device modeling, and plays an important role in optical communication. The small signal frequency response formula of laser diode is deduced, and the resonance phenomenon of package parasitic parameters is studied, and such a resonance effect is used on the compensation of the chip′s frequency response characteristics. Finally circuit simulation software PSpice is used to analyze the circuit model for small signal frequency response, and the frequency response bandwidth of 3 dB is obtained.