The purpose of this study were to understand the characteristics and attitude of patients treated with continuous subcutaneous insulin infusion (CSII), and the impact on glycaemic control in CSII patients of Taiwan in routine daily life and quality of life. A structured questionnaire was distributed to 167 CSII patients from 2001 years until now to determine patient characteristics, therapy characteristics, medical results, complications and treatment satisfaction. A 41.92% response rate was achieved, 89.8% from patients with Type 1 diabetes. The responses indicated that CSII users achieved good glycaemic control with a mean HbA1c level of 7.1±1.1%. These data suggest patients using CSII therapy achieve good metabolic control, are highly satisfied, and experience an acceptably small number of complications.