Dizziness and nausea after abortion may be caused by the following reasons: first, missed aspiration, so the embryo continues to grow and develop in the uterine cavity and estrogen continues to rise, so early pregnancy symptoms will still occur and nausea and dizziness will appear, which can often be clearly diagnosed through ultrasound examination and it is recommended to give treatment as soon as possible. Secondly, the symptoms of dizziness and nausea caused by the flu after abortion are often accompanied by muscle and joint pains, and even fever may appear, so it is recommended to actively go to the internal medicine department to give the corresponding treatment. Thirdly, the symptoms may be caused by gastrointestinal diseases, which often lead to nausea, vomiting, dizziness and weakness, so it is recommended to go to internal medicine department for examination.