Whether a person with a hand wound is infected after coming into contact with the blood of an AIDS patient depends on factors such as the degree of recovery of the wound. AIDS is transmitted through blood, sexual contact and vertical transmission from mother to child. Whether or not a wound on the hand will be infected if it comes into contact with the blood of an AIDS patient depends on the condition of the wound and whether or not timely treatment measures have been taken. If there is a fresh wound on the hand with broken epidermis, and it comes into contact with the fresh blood of an AIDS patient, the amount of blood contacted is relatively large, and no treatment measures have been taken after contact, then it is very likely to be infected with the AIDS virus. This is because the blood of the AIDS patient passes through the fresh wound and enters directly into the blood circulation of the whole body, thus leading to HIV infection. If the wounds on the hands have already scabbed over, the amount of blood that comes into contact with the AIDS patient is small, and treatment measures are taken in time, the probability of infection in this case will be very small. However, at present, AIDS cannot be cured, once the exposure occurs it is still recommended to go to the hospital in time for the appropriate examination, and if necessary, blocking treatment, if the multiple examinations are negative, the infection can generally be ruled out.