Nowadays, the people have the pressure more and more, causes under the condition which many people spiritually frequently tie tight to live. Especially, sleeps every night under not good sleep quality, People spirit badly and want to doze off in daytime. Gradually the concentrated force drops, the judgment goes bad and memory decrease. And also has the possibility to initiate the cardiovascular aspect bad situation. In recent years, sleep disorder gradually national attention, Obstructive sleep apnea syndrome (obstructive sleep apnea, OSA) most often occurring. As a result of research sleep's domain bright gradually, therefore the sleep center is also popular. But equipment actually expensive scarce, so that must arrive at the patient who the sleep center makes the treatment to be fully occupied, but must line up the seeing a doctor. In order to solve this situation, many R&D center then research development simple home measuring instrument. The patient may carry on the examination in the familiar place; the solution has the inaccurate situation in the new environment. In addition hardware's development has facilitated dexterously gradually, on the software awaits improvements. Therefore the research discussion calculation technology with the characteristic selection, whether there is the more accurate judgment OSA symptom. The new calculating method analysis mode discusses by Hilbert-Huang Transform (Hilbert-Huang Transform, HHT).