Do painless abortion before need to do what check, mainly have these checks: 1, to do ultrasound to determine whether the uterus is pregnant, and then an embryo how big, is not in the pregnancy weeks can do abortion, general pregnancy within ten weeks can be done. 2, to determine the size of the uterus pregnancy, the appropriate case to do a leukorrhea check, mainly to see if there is no vaginitis, because if there are genital infections are Can not carry out the operation of the uterine cavity, but also can not be operated. 3, to draw blood tests to do blood routine, coagulation time, as well as syphilis, AIDS and hepatitis B virus and other infectious diseases, because it is to be a general anesthesia. 4, to do an electrocardiogram to rule out cardiac disease, there are no contraindications to general anesthesia. Mainly these aspects.