Abstract: Aiming at the problems of the current experimental box used for analog circuit course experiments and practical teaching, such as insufficient operability, complicated wiring, difficult maintenance, and insufficient comprehensive manifestation, this article introduces a low cost, convenient operation, easy maintenance, and scalable modular visual analog circuit experiment box to improve the learning interest and learning quality of beginners. This experiment box can complete most of the simulation experiments in the "Basics of Analog Electronic Technology" textbook, and can be further expanded by the sub-board design. At the same time, by configuring digital functions such as analog-to-digital conversion, digital-to-analog conversion, and serial port communication with the microprocessor on the motherboard and combining the PC system software, the PC-side control and display of the analog circuit experiment is further realized, and the analog circuit experiment is improved. Visualization. Experimental results show that the experiment box is superior to the existing analog circuit experiment boxes in terms of operability, comprehensiveness and visualization.