Colds and coughs have an impact on the physical examination, the specific impact of the following aspects: first, body temperature. Cold and cough, body temperature are elevated to a certain extent. If the cold is longer, it may cause a decrease in visual function, that is, there is a decrease in visual acuity examination, but the chances of this situation are relatively small. Second, blood test. Cold and cough will generally cause the number of white blood cells to rise, other than the red blood cells hemoglobin has little effect, if you take cold and flu medication, in the case of medication, it may cause phosphatase elevation, if it is not several times higher, there is no need for further review. Third, chest X-ray. If there is no lesion in the lungs, just a cold, the chest X-ray result is often enhanced and blurred lung texture. It is recommended to wait until the cold is well, and then go for a physical examination, so that all body functions can reach the normal standard.