Tuberculosis is the most common infection of AIDS is not true. The most common opportunistic infection observed clinically during the onset of AIDS is Pneumocystis carinii pneumonia, and tuberculosis is less likely to be contracted. AIDS causes more opportunistic infections, tuberculosis is only one of them, and compared to other infections, the chance is relatively low. There is no evidence-based medical evidence that TB is the most common infection associated with HIV. The most common opportunistic infections caused by AIDS are Pneumocystis carinii pneumonia caused by Pneumocystis carinii, mucosal infections caused by Cryptococcus, Streptococcus, etc.; and viral infections caused by herpes simplex and herpes zoster. Pneumocystis pneumonia is a fungal infection caused by Pneumocystis japonicus infecting the human body. From clinical observation it is the most common opportunistic infection of AIDS. If the symptoms of opportunistic infections manifest during the onset of AIDS, you need to go to the hospital in time.