Abstract Objection: Aim to analysis from National Health Insurance (NHI) of Taiwan from 1996-2011. Method The 1575 clients of Electroconvulsive Therapy (ECT) admitted in psychiatric acute or psychosomatic ward .comparison with statistic model with age gender Charlson Comobidity Index (CCI) match .Variable details of demographic data, and frequency for ECT were recorded.Comparing with last year ,next 1 year and next 2 year follow up. Analysis with SAS of Generalized Estimating Equation (GEE). Keyword: Electroconulsive Therapy National Health Insurance Medical Service