Weak fetal heartbeat in the second month of pregnancy is often the result of poor embryonic development, the need for timely testing of progesterone and human chorionic gonadotropin levels, if necessary, take medication or terminate the pregnancy. The weak fetal heart in the second month of pregnancy is often the result of poor embryonic development, resulting in the fetal heart is not strong enough, you need to test the progesterone as well as human chorionic gonadotropin levels, to see if the fetus has signs of miscarriage, if there is a sign of miscarriage, you need to take a progestin such as dextroprogesterone or progesterone to carry out the treatment, and continue to monitor the situation, and if the cessation of the pregnancy may have to terminate the pregnancy. It is recommended that once a pregnant woman discovers that the fetal heart is weak in the second month of pregnancy, she should consult a doctor in time to complete the relevant examinations and then carry out targeted treatment and therapy.