Intelligent incubators could simulate natural incubation conditions such as temperature and humidity to provide a suitable environment for the normal development of poultry eggs and improve the efficiency of the breeding industry. According to the design index, this article takes the single-chip microcomputer as the control core, adopts the modular and hierarchical thinking to design the system. The system includes a temperature and humidity detection module, a liquid crystal display module and a buzzer alarm module. The software program of this system is written in C51 language, simulation and hardware test results are carrid out to demonstrate that the functions required by the intelligent incubator are realized.