The causes of red leucorrhea in a woman’s first month of pregnancy are: i. It may be the occurrence of preterm miscarriage. Second, it is possible that women with cervical erosion, cervical polyps and other chronic cervicitis will also appear a little red leucorrhea. As the pregnancy is one month and the number of days of pregnancy is small, women had better go to the hospital to do gynecological ultrasound, blood test blood HCG and progesterone levels, if there is a pre-eclampsia, such as blood HCG, progesterone level is slightly low, should pay attention to appropriate bed rest, can take progesterone drugs for fetal preservation treatment. If there is chronic cervical inflammation caused by cervical erosion, cervical polyps, etc., corresponding medication can be given under the guidance of a doctor. When a woman has a somewhat red leucorrhea in the first month of pregnancy, symptomatic treatment must be actively given.