Result the result showed that influencing factors include patient's condition, share of medical fee, income, hospital's rank, different occupation, and other concomitant diseases.

Diabetes is a kind of chronic diseases needs to be treated in the most time outside hospital. Some patients got complication because lack of ability of self-tending.

Meth - od: the trend of using anti diabetic drugs was analyzed in the 22 hospitals in Nanjing from 2003 to 2005 by sequencing DDDs of consuming amount.