Chemotherapy PICC tube is not very harmful, just prone to infection. PICC tube is more commonly used in the clinical treatment of chemotherapy, through the central vein puncture PICC tube, and then let the chemotherapy drugs through the PICC tube for the body, can reduce the damage of the drug for the superficial venous blood vessels, to avoid the emergence of the problem of pain, the case as long as the PICC tube disinfection, care will not have harm. However, because the head of PICC tube is exposed to the air for a long time, it is easy to be infected, but weekly maintenance and disinfection can be effectively avoided, and some patients may also have phlebitis, thrombus clogging and other cases, but it is relatively rare.