More than 1 month of pregnancy dizziness is mostly considered to be caused by early pregnancy reaction, some pathological factors may also cause dizziness, the common reasons are as follows: 1, early pregnancy reaction: the level of progesterone and estrogen in the body increases significantly after pregnancy, the fluctuation of hormone level will appear dizziness, nausea, vomiting, drowsiness, weakness and other symptoms. Most of them appear around 6 weeks after menopause and gradually ease after 12 weeks; 2. Cold: Some pregnant women may not pay attention to weather changes, resulting in cold and flu, which can lead to vasodilatation and insufficient blood supply to the brain and induce dizziness. The cold itself has a certain degree of self-healing, mild colds pay attention to drink more water, more rest, can help to recover; 3, anemia: anemia when the whole body is in a state of ischemia, hypoxia, lack of oxygen to nerve tissue will appear dizziness, if frequent dizziness, it is recommended to check the blood routine, found anemia to clarify the type and degree of anemia, and actively correct anemia to help relieve symptoms; 4, abnormal blood pressure. Low blood pressure or high blood pressure may cause dizziness. Low blood pressure may cause insufficient blood volume, and insufficient blood supply to the brain may cause dizziness, while elevated blood pressure may induce cerebral vascular spasm and dizziness. Take folic acid and multivitamin minerals (maternal type) appropriately in early pregnancy. Pregnant women with anemia also need more iron supplements. Pregnant women should have adequate nutrition with balanced intake of protein, calcium, iron, vitamins and other nutrients. Try to avoid spicy and greasy, no alcohol and no smoking.