Standing for a while dizziness, nausea, vomiting and sweating a lot may be related to low blood sugar, low blood pressure, anemia, cerebral blood supply and so on. 1. Hypoglycemia: daily due to poor diet, irregular work and rest, after standing for a long time may appear dizziness, nausea and vomiting, a lot of sweat. 2. Postural hypotension: daily standing for a long time, low blood pressure leads to insufficient blood supply to the brain, which induces dizziness, nausea and vomiting, profuse sweating. It is mostly seen in people with weak physique. 3. Anemia: mainly due to reduced or insufficient red blood cell production, excessive destruction of red blood cells and blood loss, which may lead to dizziness, nausea and vomiting after standing for a while and sweating a lot. 4. Insufficient cerebral blood supply: mainly due to blood vessel sclerosis and narrowing, the heart pumps blood and other factors such as caused by increasing age, obesity, irregular life, smoking and so on will also induce the disease. It may lead to dizziness, nausea and vomiting after standing for a while and a lot of sweat. If there is standing for a while dizziness, nausea, vomiting and sweating a lot, should pay attention to, take a sitting position or lying position rest, symptoms do not improve or aggravate should choose to seek medical attention.