Clinically, if the red blood cell is high, other indicators are normal: first of all, consider whether there is a correlation with the recent improper daily diet structure, usually drink less water, reduced activity, this situation is recommended to drink more water, eat more fresh vegetables and fruits, appropriate exercise, observe a period of time and then go to recheck, can return to normal; second is to see whether there is like If this is the cause, we should actively give rehydration and other treatment, if there is serious diarrhea and vomiting, we should also give anti-diarrhea and anti-vomiting, when the condition returns to normal, the number of red blood cells will also gradually return to normal; finally, we should consider whether there is a chronic hypoxic disease caused by the clinical common chronic obstructive pulmonary disease, we should The elevated erythrocytes will gradually return to normal after the remission of chronic obstructive pulmonary disease.