In early pregnancy, if there is a vague pain in the abdomen without bleeding, it is recommended to go to the obstetrics department to improve the examination, do ultrasound, and take blood tests for hormone levels to assess whether there is the possibility of preeclampsia. If it is a pre-eclampsia, it is recommended to actively preserve the fetus and treat the symptoms. It is possible that inflammation of the urinary system may lead to vague pain in the abdomen, usually accompanied by frequent urination, urinary urgency, painful urination or hematuria. It may also be caused by some intestinal diseases, such as ulcerative colitis, Crohn’s disease, and acute gastroenteritis. If there is a hidden pain in the abdomen in early pregnancy, it is recommended to go to a regular specialized hospital in time to improve the relevant examination and give timely and effective symptomatic treatment after a clear diagnosis.