The invention discloses a method for measuring a sleep apnea hyponea index.A patch provided with two electrocardio-electrodes and a three-axis accelerometer is used for tests, and the problem that a testee feels uncomfortable is avoided.By analyzing data acquired by a sensor and using sleep postures, three paths of respiratory signals are obtained, the three paths of signals are fused, a fusion signal is obtained, and accordingly a testing result is more accurate.Distribution and allocation of sympathetic nerves and pneumogastric nerves on the heart are not symmetric, and accordingly the measurement value of the first respiratory signal is not accurate.In order to avoid the problem, the first respiratory signal is corrected through the method to improve accuracy.