The circuit drawing software is the basis of the current electronic design system and is an important industrial software technology. At present, the more mature circuit drawing software is mostly foreign commercial closed-source software. These software usually have problems such as complicated operation, high demand for computer configuration, and difficulty for beginners. Based on Qt, this paper designs and implements a cross-platform circuit drawing software. With reference to the more mature related software on the market, the interface is concise and beautifully arranged. Based on the MVC framework, the view and the back-end model are separated, and the human-computer interaction function is realized by responding to related operations through the signal and slot mechanism.