Thin lining after pregnancy is usually caused by low hormone level, which can be treated by reasonable supplementation of estrogen. Thin lining after pregnancy is considered to be caused by low hormone level, when the lining is too thin, it is easy to cause preeclampsia, affecting the development of the fetus, it can be treated by supplementing hormone, such as oral progesterone tablets, intramuscular injection of progesterone injection, etc., and also need to pay attention to diet, take more soy products, milk, fish and other foods. When you are pregnant, you should pay attention to nutritional supplementation, in order to prevent fetal neural tube malformation, but also appropriate supplementation of folic acid. Daily attention should be paid to stay away from harmful substances, to avoid the development of fetal deformities, regular obstetric examination to monitor the growth of the fetus, if there is any abnormality should be timely consultation, the use of medication please follow the doctor’s instructions.