The causes of coffee-colored stuff in the leukorrhea of 19 weeks of pregnancy are the precursor of miscarriage, placenta praevia, cervical polyps, etc., which need to be treated by fetal preservation and hemostasis. 1. Miscarriage precursor: go to the hospital in time for ultrasound to check the condition of the fetus, whether it is in line with the month of pregnancy, whether the fetal heart is normal, whether the cervical opening is loose, if the fetus is in good condition, need to pay attention to more rest, forbid coitus, relax emotionally, and observe the bleeding situation, if the cervical insufficiency requires cervical cerclage to protect the fetus. 2. Placenta praevia: If the diagnosis of placenta praevia is confirmed by ultrasound examination, bed rest should be given to keep the fetus and stop bleeding. 3. Cervical polyps: generally cervical polyp bleeding is caused by contact, need to stop sex, usually will stop bleeding, and then surgery after delivery. Once the bleeding is heavy, repeated bleeding, etc., if necessary, need timely surgery to remove polyps, etc.. 19 weeks pregnant with coffee-colored stuff in the leukorrhea, need to go to the hospital as soon as possible, by the doctor according to the specific circumstances, to develop individualized diagnosis and treatment plan, so as not to affect the health of mother and child.