This article introduces ZHOU Yuhong’s experience in treating chronic aplastic anemia（ AA） by combining syndrome differentiation and constitution differentiation. The main pathogenesis is kidney deficiency along with phlegm and blood stasis. Then according to the age

physical characteristics

psychological characteristics

dietary preference

disease tendency

the adaptation to the environment and other factors

the patients could be divided into Qi deficiency constitution

Yang deficiency constitution

Yin deficiency constitution

phlegm dampness constitution and blood stasis constitution. For different types of constitutions

ZHOU summarizes different basic prescriptions to correct the corresponding constitution deviations

and prevents chronic AA by the combination of syndrome differentiation and constitution differentiation

to expect " preventing disease from exacerbating".