The use of insulin pump treatment (CSII: continuous subcutaneous insulin infusion) became widely accepted in the last couple of years. A growing body of experiences accumulated in paediatric practice because CSII is preferable for treating young patients with type 1 diabetes. Nevertheless, CSII can be used, if indicated, for treating type 2 diabetic patients as well. Recently, fast acting insulin analogues are exclusively used for CSII. At moment, clinical observations with insulin lispro and insulin aspart are available but experiences with glulisine are still limited. Although some inconsistencies could be observed in the literature, it is widely accepted, that higher reduction in HbA(1c) values could be achieved by CSII as compared to intensive conservative insulin treatment; this could be more pronounced in cases with high initial HbA(1c) values. CSII with short acting insulin analogues could lead to a higher reduction of HbA(1c) values than CSII with human regular insulin. Moreover, the decrease of hypoglycaemic events could be expected in some cases.