By studying 145 adult asmathic patients examinated at University medical center with respiratory funtion test and ECG, aged 20 - 78 years old, from March 2001 to December 2002, we found that 84/145 (57.93%) cases had normal ECG, 12 (8.27%) cases had abnormal rhythm ECG, 5 (3.45%) cases had atypical rhythm ECG, 18 (12.41%) cases had bordeline ECG, 26 (17.94%) cases had abnormal ECG.