The harms of the second painless abortion surgery, in addition to the harms of the general painless abortion surgery there are further harms, which are the harms caused by the continuous abortion surgery. So its harm is mainly reflected in two aspects: First, the general painless abortion surgery harm, including anesthesia drug allergy, vomiting during the anesthesia process, accidental aspiration. Abortion syndrome or perforation of the uterus, excessive damage to the endometrium, uterine residue, uterine infection and other adverse consequences occur during the operation. Secondly, two abortions can cause habitual abortion and secondary infertility. Moreover, after the patient gets pregnant again, it is easy to have adhesion of the placenta or implantation of the placenta.