Low bleeding on the day after painless abortion is normal as long as there are no other abnormal symptoms, but if it is accompanied by abnormal symptoms, it is not normal and requires prompt medical attention. Painless abortion is a procedure to terminate pregnancy by suctioning the tissue out of the uterine cavity through negative pressure. After the operation, if the uterus contracts well, the bleeding will be less on the day of the operation, and there are no other abnormal symptoms, and the vaginal bleeding will usually stop within 7 days. If the bleeding is low on the day of the abortion, but the bleeding is prolonged and accompanied by symptoms such as lower abdominal cramping and pain, you should be alerted to poor contraction of the uterus or infection after the operation. After the painless abortion, you should take good care of yourself and observe the vaginal bleeding, and seek medical treatment in time when abnormalities occur.