Because pregnant women are pregnant will have a lot of different symptoms occur, if it is after the third trimester of pregnancy the right side of the buttock pain is caused by the following reasons: 1, due to the early stages of pregnancy, the uterus is gradually increasing, thus oppressing the patient’s sciatic nerve and the symptoms caused by the suggestion that the pregnant woman should be appropriate rest, but try not to always sit, you can go out and take a walk or do some light sports; 2, due to the lumbar spine anterior convexity caused by the period of pregnancy, the The patient’s weight increases or the buttock pain is caused by the pressure of the fetus. If patients have other abnormal symptoms, they need to go to the hospital immediately for examination, in order to prevent preeclampsia or other complications in the future life, and patients should pay attention to the habits of life during pregnancy, eat less spicy food, and supplement protein and vitamins and other nutrients, to enhance physical fitness and strengthen the immune system.