A miscarriage at 40 days of pregnancy is an early miscarriage. The first thing is to distinguish whether it is a spontaneous abortion or an induced abortion. If the abortion is induced and the operation goes well, and the pregnancy tissue is clearly seen during the operation, the routine post-operative attention is to abstain from sex and bathing for 2 weeks, including swimming, bathing and hot spring bathing. It is not allowed for 2 weeks after surgery to reduce the chance of infection. After the operation, you can take oral antibiotics to prevent infection, as well as take medicine to promote uterine repair and stop bleeding, which will be prescribed by the doctor when you leave the hospital. If there are no special abnormalities after the operation, you need to go back to the clinic for a review 2 weeks after the operation. During the recuperation period, it is recommended to have a light diet and to prohibit alcohol and spicy food. A moderate amount of activity is recommended to help drain the blood from the uterine cavity and to pay attention to local hygiene. If there is persistent vaginal bleeding or vaginal bleeding in excess of normal menstrual flow, or if there is abdominal pain that gradually worsens, fever, vaginal discharge or vaginal bleeding with a strange odor and other abnormalities, prompt medical consultation is necessary. In case of spontaneous miscarriage, it is important to consult a doctor first to determine if the miscarriage is completely clean, and if there is residue, it must be treated in time. If the doctor determines that the abortion is completely clean, no other treatment is needed, and the precautions to be taken after the abortion are similar to those for an abortion.