The detection of AIDS (HIV virus) usually takes a certain amount of time, and most of the patients are in densely populated third world countries. Daktari Diagnostics and the University of Illinois in the United States in order to quickly and effectively To detect the HIV virus and effectively control the spread of the disease, we jointly developed this thin, small, and cheap HIV rapid detection card. The card has a built-in protein cavity for detecting T cells (thymus-derived cells) and a battery-driven cell counter. It only requires a drop of blood to quickly and accurately calculate the T cell content in the blood of the subject within 20 minutes. Normal The number of T cells in healthy people is higher than that in HIV carriers.