The normal value of blood sedimentation is 0-15mm/hour for men and 0-20mm/hour for women. For blood sedimentation has more clinical significance, the increase in blood sedimentation is mainly pathological, such as various infections, tissue damage, and malignant tumors, can cause an increase in blood sedimentation, and the most common clinical rheumatic immune diseases can also lead to an increase in blood sedimentation. Some physiological increases may occur in special populations, such as children or elderly people over 60 years of age, women during menstruation and pregnant women, which are mainly physiological and have no special clinical significance.