AIDS can be transmitted through the blood, AIDS patients’ blood can contain more HIV, the concentration will be higher, the solid needle in the AIDS patients and normal people in contact with the blood, and the middle is not sterilized can be infected with AIDS, regardless of whether the needle is solid or hollow, the top can be stained with AIDS patients’ blood. Hollow needle AIDS blood may exist in the center of the needle, solid needle AIDS blood can also exist on the surface of the needle, although from the surface of the needle can not be seen through the naked eye to see the HIV virus, but it is also possible to carry the blood on it, the blood is fresher and directly into the body of other people, it is entirely possible to lead to the transmission of AIDS.